What is the second derivative of xy+y^3=1 using implicit differentiation?

Re: What is the second derivative of xy+y^3=1 using implicit differentiation?

Quote:

Originally Posted by

**citcat** y'' of xy+y^3=1

what did you get for y' ?

Re: What is the second derivative of xy+y^3=1 using implicit differentiation?

Re: What is the second derivative of xy+y^3=1 using implicit differentiation?

Hello, citcat!

You're off to a bad start . . .

Exactly where is your difficulty?

Do you have the correct answer?

We have: .

. . . . . . . . . . . .

. . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . .[1]

Then: .

. . . . .

. . . . .

Substitute [1]:

. .

. .

. .

. .