Question

Calc help please: sin(xy)=(x^2)cosy, find y prime

Answer 1

how far are you?

Answer 2

I've always had trouble deriving trigonometric functions.. I don't know where to start

Answer 3

ok, I can get the right side actually. hold on

Answer 4

-(x^2)siny + 2xcosy

Answer 5

but what do I do with the sin(xy)?

Answer 6

yours = sin(xy ) - x^2cos(y) =0
now take derivative, term by term, first term sin(xy) = cos (xy) * (xy)' = cos (xy) [ y + xy']

Answer 7

got me?

Answer 8

no still trying to understand

Answer 9

yeah it just clicked before you posted that but thank you

Answer 10

the second term?? do it!!

Answer 11

hey, not finish yet, do the second term, please. You have a long process to get the final answer.

Answer 12

I know I'm working it on paper

Answer 13

cos(xy)(y+xy1) + (X^2)siny - 2xcosy

Answer 14

nup

Answer 15

no?