Question
x^2cosx-2xsinx-2cosx
Answers
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
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
Steve
d/dx sinx = cosx
Reiny
yup!
sloppiness on my part
sloppiness on my part