Fungsi konstan: Perbedaan antara revisi

[[Berkas:wiki_constant_function_175_200.png|thumbjmpl|rightka|Fungsi konstan ''y''=4]]

Dalam [[matematika]], '''fungsi konstan''' adalah [[Fungsi (matematika)|fungsi]] yang hasilnya tetap untuk setiap nilai masukan (input).<ref>{{cite book|title=Encyclopedia of Mathematics|url=https://archive.org/details/encyclopediamath00tant_807|last1=Tanton|first1=James|year=2005|publisher=Facts on File, New York|isbn=0-8160-5124-0|page=[https://archive.org/details/encyclopediamath00tant_807/page/n102 94]}}</ref><ref>{{cite web | url=http://web.cortland.edu/matresearch/OxfordDictionaryMathematics.pdf |title=Oxford Concise Dictionary of Mathematics, Constant Function | author=C.Clapham, J.Nicholson | publisher =Addison-Wesley | year =2009|page=175|language=english|accessdate=January 2014|archive-date=2013-10-29|archive-url=https://web.archive.org/web/20131029203826/http://web.cortland.edu/matresearch/OxfordDictionaryMathematics.pdf|dead-url=no}}</ref><ref>{{cite book|title=CRC Concise Encyclopedia of Mathematics|url=https://archive.org/details/crcconciseencycl0000weis|last1=Weisstein|first1=Eric|publisher=CRC Press, London|isbn=0-8493-9640-9|year=1999|page=[https://archive.org/details/crcconciseencycl0000weis/page/313 313]}}</ref> Sebagai contoh, fungsi <math>y(x) = 4</math> merupakan fungsi konstan karena hasil dari <math>y(x)</math> adalah 4 untuk berapapun nilai <math>x</math> (lihat gambar).