# Math Help - Second derivative with implicit differentiation help

1. ## Second derivative with implicit differentiation help

Hey guys, I need help with a second derivative for xy+y3=5

My final is d2y/dx2=2xy/(x+3y2)3

Can yall check if this is right?

2. ## Re: Second derivative with implicit differentiation help

You are really close. the denominator (x+3y^2) is squared not cubed.

3. ## Re: Second derivative with implicit differentiation help

You are absolutely right. see the attachment

4. ## Re: Second derivative with implicit differentiation help

I retract my statement. I made a mistake with squaring the denominator. you are correct.