Differentiation Help in calculus?

Find y'' (y double prime) for

9x^2 + y^2=9

Please help.

Update:

I know the derivative of the first one is y'= -8x/y , but what is the derivative of y'= -8x/y?

1 Answer

Relevance
  • 1 decade ago
    Favorite Answer

    = 18x + 2y*dy/dx=0

    = 2y*dy/dx= -18x

    = dy/dx= -18x/2y

    I think that's right.. I've had some trouble with differentiation but this is a pretty simple differentiation problem.

Still have questions? Get your answers by asking now.