P p4pri Apr 2009 16 0 May 15, 2010 #1 Hey, how would you differentiate y=xsinx I got xcosx but that's wrong.

A Archie Meade Dec 2009 3,120 1,342 May 15, 2010 #2 p4pri said: Hey, how would you differentiate y=xsinx I got xcosx but that's wrong. Click to expand... Hi p4pri, \(\displaystyle xsinx\) is a product, hence you need to use the product rule of differentiation. \(\displaystyle \frac{d}{dx}xsinx=x\frac{d}{dx}sinx+sinx\frac{d}{dx}x\) Reactions: p4pri

p4pri said: Hey, how would you differentiate y=xsinx I got xcosx but that's wrong. Click to expand... Hi p4pri, \(\displaystyle xsinx\) is a product, hence you need to use the product rule of differentiation. \(\displaystyle \frac{d}{dx}xsinx=x\frac{d}{dx}sinx+sinx\frac{d}{dx}x\)