How do you differentiate $f(x)=4sin^2x+5cos^2x$ ?

Question

6999 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-02-16T17:05:58

See below

This needs to be differentiated using the chain rule for polynomial functions:

$f(x)^n=nf(x)^(n-1)f'(x)$

$f'(x)=8sinxcosx-10sinxcosx$

How do you differentiate f(x)=4sin^2x+5cos^2xf(x)=4sin^2x+5cos^2x?