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October 7, 2015
Posted by **DJ** on Friday, October 28, 2011 at 5:11pm.

2(x^2) + 2xy + 2(y^3)= -18

- Calculus -
**Steve**, Friday, October 28, 2011 at 5:56pmWhat's the problem? If you understand implicit differentiation, it's just crank away:

4x + 2y + 2xy' + 6y^2 y' = 0

y'(2x + 6y^2) = -4x - 2y

y' = -2(2x+y)/2(x+3y^2) = -(2x+y)/(x+3y^2)