I didn't hand it in. & Which qns ?

actually i need help on a wksht ms ang gave. how to diff xsinxcosx?

product rule.

let x sin x be u & cos x be v

or any other way, as long as there are 1 u & 1 v

xsinx can be tgt? i thought that's 2 terms leh!

thn do product rule for tht again.

ans shld be x cos 2x + 0.5sin 2x

rite ?

OMG HOW TO DO ONE

U R CORRECT BTW

^^

I take x to be one term, & sin x cos x to be another

thn product rule.

d/dx (x sin x cos x) = sin x cos x + x d/dx (sin x cos x)

the rest you shld be able to see...

d/dsinxcox) is what?

LOL THE FACE -.-

suits the situation now though...

d/dx (sin x cos x) = sin x d/dx (cos x) + cos x d/dx (sin x)

ohhh wait i noe le!

HAHAHAHA OK THANKS

welcome.

Yay Bingyou thanks so much, I thought I'm the only one in the class who didn't hand in

LOL!