## anonymous 5 years ago Use implicit differentiation to find d^2y/dx^2 for 4x^5+11y=100. I got the first step as 20x^4+11dy/dx=0. Then what is the next step?

1. anonymous

${d^{2y}}\over{dx^{2}}$ ?????? Anyways, assuming that $20x^4+11{{dy}\over{dx}}$ is your first derivative, then you can go about it like: $11{{dy}\over{dx}}=-20x^4$ ${{dy}\over{dx}}=-{{20x^4}\over{11}}$

2. anonymous

The problem should have been (d^2)y/dx^2. I don't know if that made a difference in how you solved this problem.

3. anonymous

So they way it is written do you take the second derivative

4. anonymous

Ah yes, I believe that is what they want.