Question

find y'' of xy + y^2=1

Answer 1

did you find y' ?

Answer 2

or better, solve for y first,,the given eqn is a quadratic in y.

Answer 3

is it 2?

Answer 4

i dont know! :P

Answer 5

i mean i know the method/concept..though am too lazy solving! :P

Answer 6

can you explain the concept then?

Answer 7

y^2 + xy -1 = 0

solve for y from here in terms of x

then differentiate twice..

Answer 8

did i explain well ?

Answer 9

yeah! thanks :)