We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
0
943
1
avatar

cos 4x+sin 2x∙cos 2x

 19.12.2014
 #1
avatar+7477 
0

I think you mean cos^4 x + sin^2 x . cos^2 x

\(cos^4x+sin^2xcos^2x\\=cos^2x(cos^2x+sin^2x)=cos^2x\)

.
 13.07.2016

28 Пользователи на сайте