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	<title>Persamaan fungsional - Riwayat revisi</title>
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	<updated>2026-09-16T08:31:42Z</updated>
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		<title>Maintenance script: Presentation V4: sitasi, referensi, Math, Wikimedia Commons, dan atribusi</title>
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		<updated>2026-08-25T04:04:50Z</updated>

		<summary type="html">&lt;p&gt;Presentation V4: sitasi, referensi, Math, Wikimedia Commons, dan atribusi&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw-interface=&quot;&quot;&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Revisi sebelumnya&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revisi per 25 Agustus 2026 04.04&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Baris 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Baris 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Dalam [[matematika]], &#039;&#039;&#039;persamaan fungsional&#039;&#039;&#039; mengacu pada suatu [[Fungsi (matematika)|fungsi]] yang [[Tidak diketahui (matematika)|tidak diketahui]] dalam suatu [[persamaan]]. Contoh persamaan fungsional di antaranya [[persamaan diferensial]] dan [[persamaan integral]]. Akan tetapi, dalam pengertian yang sempit, persamaan fungsional berarti persamaan yang mengaitkan beberapa nilai dari fungsi yang sama. Sebagai contoh, [[fungsi logaritma]] [[Logaritma#Karakterisasi melalui rumus hasil kali|dicirikan]] dengan persamaan fungsional logaritma &amp;lt;math&amp;gt;\log(xy) = \log(x) + \log(y)&amp;lt;/math&amp;gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Dalam [[matematika]], &#039;&#039;&#039;persamaan fungsional&#039;&#039;&#039;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;ref&amp;gt;Themistocles M. Rassias. [https://books.google.com/?id=tFTFBAAAQBAJ&amp;amp;printsec=frontcover&amp;amp;dq=%22Introduction+to+the+Theory+of+Functional+Equations+and+Inequalities%22 Functional Equations and Inequalities]. Kluwer Academic Publishers. 2000. hlm. 335. ISBN 0-7923-6484-8.&amp;lt;/ref&amp;gt;&amp;lt;ref&amp;gt;Hyers, D. H. &#039;&#039;Stability of Functional Equations in Several Variables&#039;&#039;. Birkhäuser Verlag. 1998. hlm. 313. ISBN 0-8176-4024-X.&amp;lt;/ref&amp;gt; &lt;/ins&gt;mengacu pada suatu [[Fungsi (matematika)|fungsi]] yang [[Tidak diketahui (matematika)|tidak diketahui]] dalam suatu [[persamaan]]. Contoh persamaan fungsional di antaranya [[persamaan diferensial]] dan [[persamaan integral]]. Akan tetapi, dalam pengertian yang sempit, persamaan fungsional berarti persamaan yang mengaitkan beberapa nilai dari fungsi yang sama. Sebagai contoh, [[fungsi logaritma]] [[Logaritma#Karakterisasi melalui rumus hasil kali|dicirikan]] dengan persamaan fungsional logaritma &amp;lt;math&amp;gt;\log(xy) = \log(x) + \log(y)&amp;lt;/math&amp;gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Jika misalkan [[domain fungsi]] dari fungsi yang tak diketahui mengandung [[bilangan asli]], maka fungsi itu dipandang sebagai [[Barisan dan deret geometri|barisan]], dan dalam pengertian yang sempit, dapat disebut [[relasi rekurensi]]. Jadi, istilah &amp;#039;&amp;#039;persamaan fungsional&amp;#039;&amp;#039; dipakai untuk [[fungsi bilangan real]] dan [[Fungsi bilangan kompleks|bilangan kompleks]]. Lain daripada itu, [[Fungsi mulus|syarat kemulusan]] kerapkali diasumsi sebagai penyelesaian, karena tanpa syarat tersebut, banyak persamaan fungsional mempunyai penyelesaian yang tak beraturan. Sebagai contoh, [[fungsi gamma]] memenuhi persamaan fungsional &amp;lt;math&amp;gt;f (x + 1) = x f (x)&amp;lt;/math&amp;gt; dan nilai awal &amp;lt;math&amp;gt;f (1) = 1.&amp;lt;/math&amp;gt; Sejatinya ada banyak fungsi yang memenuhi syarat-syarat tersebut, tetapi fungsi gamma merupakan fungsi yang unik, karena fungsi ini [[Fungsi meromorfik|meromorfik]] di seluruh bidang kompleks, and [[Fungsi cembung secara logaritmik|cembung secara logaritmik]] untuk  bilangan real sekaligus bernilai positif ([[teorema Bohr–Mollerup]]).&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Jika misalkan [[domain fungsi]] dari fungsi yang tak diketahui mengandung [[bilangan asli]], maka fungsi itu dipandang sebagai [[Barisan dan deret geometri|barisan]], dan dalam pengertian yang sempit, dapat disebut [[relasi rekurensi]]. Jadi, istilah &amp;#039;&amp;#039;persamaan fungsional&amp;#039;&amp;#039; dipakai untuk [[fungsi bilangan real]] dan [[Fungsi bilangan kompleks|bilangan kompleks]]. Lain daripada itu, [[Fungsi mulus|syarat kemulusan]] kerapkali diasumsi sebagai penyelesaian, karena tanpa syarat tersebut, banyak persamaan fungsional mempunyai penyelesaian yang tak beraturan. Sebagai contoh, [[fungsi gamma]] memenuhi persamaan fungsional &amp;lt;math&amp;gt;f (x + 1) = x f (x)&amp;lt;/math&amp;gt; dan nilai awal &amp;lt;math&amp;gt;f (1) = 1.&amp;lt;/math&amp;gt; Sejatinya ada banyak fungsi yang memenuhi syarat-syarat tersebut, tetapi fungsi gamma merupakan fungsi yang unik, karena fungsi ini [[Fungsi meromorfik|meromorfik]] di seluruh bidang kompleks, and [[Fungsi cembung secara logaritmik|cembung secara logaritmik]] untuk  bilangan real sekaligus bernilai positif ([[teorema Bohr–Mollerup]]).&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l10&quot;&gt;Baris 10:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Baris 10:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;== Catatan ==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;== Catatan ==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;== Referensi ==&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;*[[János Aczél (mathematician)|János Aczél]], &#039;&#039;[https://books.google.com/books?id=JEB0BFvRwrcC&amp;amp;printsec=frontcover&amp;amp;dq=isbn:0792364848&amp;amp;hl=en&amp;amp;sa=X&amp;amp;ved=0ahUKEwjygO290cHjAhXBLc0KHYWPC0oQ6AEIKjAA#v=onepage&amp;amp;q&amp;amp;f=false Lectures on Functional Equations and Their Applications]&#039;&#039;, [[Academic Press]], 1966,  reprinted by Dover Publications,   .&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;*János Aczél &amp;amp; J. Dhombres, &#039;&#039;[https://books.google.com/books?id=8EWnEh18rVgC&amp;amp;printsec=frontcover&amp;amp;dq=%22Functional+Equations+in+Several+Variables%22&amp;amp;hl=en&amp;amp;sa=X&amp;amp;ved=0ahUKEwi6orf1q-riAhUMbq0KHUrvD_gQ6AEIKjAA#v=onepage&amp;amp;q=%22Functional%20Equations%20in%20Several%20Variables%22&amp;amp;f=false Functional Equations in Several Variables]&#039;&#039;, [[Cambridge University Press]], 1989.&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;*C. Efthimiou, &#039;&#039;Introduction to Functional Equations&#039;&#039;, AMS, 2011,  ; [http://www.msri.org/people/staff/levy/files/MCL/Efthimiou/100914book.pdf  online].&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;*Pl. Kannappan, &#039;&#039;[https://books.google.com/books?hl=en&amp;amp;lr=&amp;amp;id=SdZoCM2OeuIC&amp;amp;oi=fnd&amp;amp;pg=PA1&amp;amp;dq=%22Functional+Equations+and+Inequalities+with+Applications%22&amp;amp;ots=GMxSJ7mUw4&amp;amp;sig=Rzz_1Rdt3VOwx_FawgihJYdcag4#v=onepage&amp;amp;q=%22Functional%20Equations%20and%20Inequalities%20with%20Applications%22&amp;amp;f=false Functional Equations and Inequalities with Applications]&#039;&#039;, Springer, 2009.&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;*[[Marek Kuczma]], &#039;&#039;[https://books.google.com/books?id=tFTFBAAAQBAJ&amp;amp;printsec=frontcover&amp;amp;dq=%22Introduction+to+the+Theory+of+Functional+Equations+and+Inequalities%22&amp;amp;hl=en&amp;amp;sa=X&amp;amp;ved=0ahUKEwjt3Yrd0cHjAhWIXM0KHTnjDaUQ6AEIKjAA#v=onepage&amp;amp;q=%22Introduction%20to%20the%20Theory%20of%20Functional%20Equations%20and%20Inequalities%22&amp;amp;f=false Introduction to the Theory of Functional Equations and Inequalities]&#039;&#039;, second edition, Birkhäuser, 2009.&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;*Henrik Stetkær, &#039;&#039;[https://books.google.com/books?hl=en&amp;amp;lr=&amp;amp;id=JzS7CgAAQBAJ&amp;amp;oi=fnd&amp;amp;pg=PR5&amp;amp;dq=%22Functional+Equations+on+Groups%22&amp;amp;ots=gR70hWPPVB&amp;amp;sig=xLsnUUDLjI94MJ9HaNOBFSzhP9o#v=onepage&amp;amp;q=%22Functional%20Equations%20on%20Groups%22&amp;amp;f=false Functional Equations on Groups]&#039;&#039;, first edition, World Scientific Publishing, 2013.&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;*&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;== Pranala luar ==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;== Pranala luar ==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* [http://eqworld.ipmnet.ru/en/solutions/fe.htm Functional Equations: Exact Solutions] at EqWorld: The World of Mathematical Equations.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* [http://eqworld.ipmnet.ru/en/solutions/fe.htm Functional Equations: Exact Solutions] at EqWorld: The World of Mathematical Equations.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l26&quot;&gt;Baris 26:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Baris 15:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* [https://web.archive.org/web/20120227145129/http://www.imomath.com/tekstkut/funeqn_mr.pdf IMO Compendium text (archived)] on functional equations in problem solving.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* [https://web.archive.org/web/20120227145129/http://www.imomath.com/tekstkut/funeqn_mr.pdf IMO Compendium text (archived)] on functional equations in problem solving.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt; &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;== Referensi ==&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;references /&amp;gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;== Sumber dan atribusi ==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;== Sumber dan atribusi ==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Konten artikel ini diadaptasi dari [https://id.wikipedia.org/w/index.php?title=Persamaan+fungsional&amp;amp;oldid=29299796 Wikipedia bahasa Indonesia], revisi 29299796 (2026-05-31T23:34:48Z), yang tersedia berdasarkan lisensi Creative Commons Atribusi-BerbagiSerupa (CC BY-SA). Mohon gunakan konten ini secara bijak serta sesuai dengan ketentuan lisensi yang berlaku.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Konten artikel ini diadaptasi dari [https://id.wikipedia.org/w/index.php?title=Persamaan+fungsional&amp;amp;oldid=29299796 Wikipedia bahasa Indonesia], revisi 29299796 (2026-05-31T23:34:48Z), yang tersedia berdasarkan lisensi Creative Commons Atribusi-BerbagiSerupa (CC BY-SA). Mohon gunakan konten ini secara bijak serta sesuai dengan ketentuan lisensi yang berlaku.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;!-- WIKI_UNISSULA_PRESENTATION_V4 --&amp;gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Maintenance script</name></author>
	</entry>
	<entry>
		<id>https://wiki.unissula.ac.id/index.php?title=Persamaan_fungsional&amp;diff=8689&amp;oldid=prev</id>
		<title>Maintenance script: Impor teks terkontrol dari Wikipedia bahasa Indonesia; revisi 29299796; atribusi sumber disertakan.</title>
		<link rel="alternate" type="text/html" href="https://wiki.unissula.ac.id/index.php?title=Persamaan_fungsional&amp;diff=8689&amp;oldid=prev"/>
		<updated>2026-08-25T03:32:18Z</updated>

		<summary type="html">&lt;p&gt;Impor teks terkontrol dari Wikipedia bahasa Indonesia; revisi 29299796; atribusi sumber disertakan.&lt;/p&gt;
&lt;p&gt;&lt;b&gt;Halaman baru&lt;/b&gt;&lt;/p&gt;&lt;div&gt;Dalam [[matematika]], &amp;#039;&amp;#039;&amp;#039;persamaan fungsional&amp;#039;&amp;#039;&amp;#039; mengacu pada suatu [[Fungsi (matematika)|fungsi]] yang [[Tidak diketahui (matematika)|tidak diketahui]] dalam suatu [[persamaan]]. Contoh persamaan fungsional di antaranya [[persamaan diferensial]] dan [[persamaan integral]]. Akan tetapi, dalam pengertian yang sempit, persamaan fungsional berarti persamaan yang mengaitkan beberapa nilai dari fungsi yang sama. Sebagai contoh, [[fungsi logaritma]] [[Logaritma#Karakterisasi melalui rumus hasil kali|dicirikan]] dengan persamaan fungsional logaritma &amp;lt;math&amp;gt;\log(xy) = \log(x) + \log(y)&amp;lt;/math&amp;gt;.&lt;br /&gt;
&lt;br /&gt;
Jika misalkan [[domain fungsi]] dari fungsi yang tak diketahui mengandung [[bilangan asli]], maka fungsi itu dipandang sebagai [[Barisan dan deret geometri|barisan]], dan dalam pengertian yang sempit, dapat disebut [[relasi rekurensi]]. Jadi, istilah &amp;#039;&amp;#039;persamaan fungsional&amp;#039;&amp;#039; dipakai untuk [[fungsi bilangan real]] dan [[Fungsi bilangan kompleks|bilangan kompleks]]. Lain daripada itu, [[Fungsi mulus|syarat kemulusan]] kerapkali diasumsi sebagai penyelesaian, karena tanpa syarat tersebut, banyak persamaan fungsional mempunyai penyelesaian yang tak beraturan. Sebagai contoh, [[fungsi gamma]] memenuhi persamaan fungsional &amp;lt;math&amp;gt;f (x + 1) = x f (x)&amp;lt;/math&amp;gt; dan nilai awal &amp;lt;math&amp;gt;f (1) = 1.&amp;lt;/math&amp;gt; Sejatinya ada banyak fungsi yang memenuhi syarat-syarat tersebut, tetapi fungsi gamma merupakan fungsi yang unik, karena fungsi ini [[Fungsi meromorfik|meromorfik]] di seluruh bidang kompleks, and [[Fungsi cembung secara logaritmik|cembung secara logaritmik]] untuk  bilangan real sekaligus bernilai positif ([[teorema Bohr–Mollerup]]).&lt;br /&gt;
== Lihat pula ==&lt;br /&gt;
* [[Persamaan fungsional (fungsi-L)]]&lt;br /&gt;
* [[Persamaan Bellman]]&lt;br /&gt;
* [[Pemrograman dinamis]]&lt;br /&gt;
*[[Fungsi implisit]]&lt;br /&gt;
* [[Persamaan diferensial fungsional]]&lt;br /&gt;
&lt;br /&gt;
== Catatan ==&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
== Referensi ==&lt;br /&gt;
*[[János Aczél (mathematician)|János Aczél]], &amp;#039;&amp;#039;[https://books.google.com/books?id=JEB0BFvRwrcC&amp;amp;printsec=frontcover&amp;amp;dq=isbn:0792364848&amp;amp;hl=en&amp;amp;sa=X&amp;amp;ved=0ahUKEwjygO290cHjAhXBLc0KHYWPC0oQ6AEIKjAA#v=onepage&amp;amp;q&amp;amp;f=false Lectures on Functional Equations and Their Applications]&amp;#039;&amp;#039;, [[Academic Press]], 1966,  reprinted by Dover Publications,   .&lt;br /&gt;
*János Aczél &amp;amp; J. Dhombres, &amp;#039;&amp;#039;[https://books.google.com/books?id=8EWnEh18rVgC&amp;amp;printsec=frontcover&amp;amp;dq=%22Functional+Equations+in+Several+Variables%22&amp;amp;hl=en&amp;amp;sa=X&amp;amp;ved=0ahUKEwi6orf1q-riAhUMbq0KHUrvD_gQ6AEIKjAA#v=onepage&amp;amp;q=%22Functional%20Equations%20in%20Several%20Variables%22&amp;amp;f=false Functional Equations in Several Variables]&amp;#039;&amp;#039;, [[Cambridge University Press]], 1989.&lt;br /&gt;
*C. Efthimiou, &amp;#039;&amp;#039;Introduction to Functional Equations&amp;#039;&amp;#039;, AMS, 2011,  ; [http://www.msri.org/people/staff/levy/files/MCL/Efthimiou/100914book.pdf  online].&lt;br /&gt;
*Pl. Kannappan, &amp;#039;&amp;#039;[https://books.google.com/books?hl=en&amp;amp;lr=&amp;amp;id=SdZoCM2OeuIC&amp;amp;oi=fnd&amp;amp;pg=PA1&amp;amp;dq=%22Functional+Equations+and+Inequalities+with+Applications%22&amp;amp;ots=GMxSJ7mUw4&amp;amp;sig=Rzz_1Rdt3VOwx_FawgihJYdcag4#v=onepage&amp;amp;q=%22Functional%20Equations%20and%20Inequalities%20with%20Applications%22&amp;amp;f=false Functional Equations and Inequalities with Applications]&amp;#039;&amp;#039;, Springer, 2009.&lt;br /&gt;
*[[Marek Kuczma]], &amp;#039;&amp;#039;[https://books.google.com/books?id=tFTFBAAAQBAJ&amp;amp;printsec=frontcover&amp;amp;dq=%22Introduction+to+the+Theory+of+Functional+Equations+and+Inequalities%22&amp;amp;hl=en&amp;amp;sa=X&amp;amp;ved=0ahUKEwjt3Yrd0cHjAhWIXM0KHTnjDaUQ6AEIKjAA#v=onepage&amp;amp;q=%22Introduction%20to%20the%20Theory%20of%20Functional%20Equations%20and%20Inequalities%22&amp;amp;f=false Introduction to the Theory of Functional Equations and Inequalities]&amp;#039;&amp;#039;, second edition, Birkhäuser, 2009.&lt;br /&gt;
*Henrik Stetkær, &amp;#039;&amp;#039;[https://books.google.com/books?hl=en&amp;amp;lr=&amp;amp;id=JzS7CgAAQBAJ&amp;amp;oi=fnd&amp;amp;pg=PR5&amp;amp;dq=%22Functional+Equations+on+Groups%22&amp;amp;ots=gR70hWPPVB&amp;amp;sig=xLsnUUDLjI94MJ9HaNOBFSzhP9o#v=onepage&amp;amp;q=%22Functional%20Equations%20on%20Groups%22&amp;amp;f=false Functional Equations on Groups]&amp;#039;&amp;#039;, first edition, World Scientific Publishing, 2013.&lt;br /&gt;
*&lt;br /&gt;
&lt;br /&gt;
== Pranala luar ==&lt;br /&gt;
* [http://eqworld.ipmnet.ru/en/solutions/fe.htm Functional Equations: Exact Solutions] at EqWorld: The World of Mathematical Equations.&lt;br /&gt;
* [http://eqworld.ipmnet.ru/en/solutions/eqindex/eqindex-fe.htm Functional Equations: Index] at EqWorld: The World of Mathematical Equations.&lt;br /&gt;
* [https://web.archive.org/web/20120227145129/http://www.imomath.com/tekstkut/funeqn_mr.pdf IMO Compendium text (archived)] on functional equations in problem solving.&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
== Sumber dan atribusi ==&lt;br /&gt;
&lt;br /&gt;
Konten artikel ini diadaptasi dari [https://id.wikipedia.org/w/index.php?title=Persamaan+fungsional&amp;amp;oldid=29299796 Wikipedia bahasa Indonesia], revisi 29299796 (2026-05-31T23:34:48Z), yang tersedia berdasarkan lisensi Creative Commons Atribusi-BerbagiSerupa (CC BY-SA). Mohon gunakan konten ini secara bijak serta sesuai dengan ketentuan lisensi yang berlaku.&lt;/div&gt;</summary>
		<author><name>Maintenance script</name></author>
	</entry>
</feed>