Browse: Home   /   Chain rule   /   Assignments   /   Solution assignment 10 Chain rule

Solution assignment 10 Chain rule

Return to Assignments Chain rule

Assignment 10

Differentiate:

y=\cos(-x)

Solution

This function can be differentiated by using the chain rule:

y'=-\sin(-x)\cdot-1=\sin(-x)=-\sin(x)

It can be done even faster. From trigonometry we know:

y=\cos(-x)=\cos(x)

and this function is in the list of standard functions:

y'=-\sin(x)

Return to Assignments Chain rule

0
Web Design BangladeshWeb Design BangladeshMymensingh