Asked by jnky

x^2cosx-2xsinx-2cosx

Answers

Answered by Reiny
I assume that you want the derivative, since you titles your post that way.

if y = x^2cosx-2xsinx-2cosx
dy/dx = (x^2)(-sinx) + 2x cosx - 2x(-cosx) - 2sinx + 2sinx
= -x^2( sinx) + 4x( cosx)

etc if needed
Answered by Steve
d/dx sinx = cosx
Answered by Reiny
yup!
sloppiness on my part
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