Question

Find the derivative of the function.
y = [x + (x + sin^2 x)^3]^7
I got 7(x+(x+sin^2x)^3)^6(1+3(x+sin^2x)^2)(1+sin(2x))

Answer 1

everything looks good except in the last bracket

derivative of sin^2(x) = 2sin(x)*cos(x)

Answer 2

hmm i think they are the same, by the "double angle" formula

Answer 3

you're right.

A+ amadosw ^_^