derivative of y=(x^2)cosx+2xsinx

[pvtponcho]

I tried breaking down each half into the product rule, but i'm starting to think that i need to simplify this in someway first. Any help would be a appreciated. i know the answer is sinx(2-x^2)+4xcosx. I just don't know how to get to that point.

 

[tkhunny]

No, just plug away. What do you get?

(x^2)(-sin(x)) + 2xcos(x) + 2xcos(x) + 2sin(x)

Simplify.