Okay, I feel really dumb, because this seems like something I should know, but I don't. So, here's my question.(adsbygoogle = window.adsbygoogle || []).push({});

Suppose I have d2y/dx2, x = x(z), and z = z(x)

How do I find d2y/dz2?

Here's what I did:

dy/dz = dy/dx * dx/dz

d2y/dz2 = d/dz ( dy/ dz ) = d/dz (dy/dx * dx/dz)

= d2y/dx2 * (dx/dz)^2 + dy/dx * d2x/dz2

Is that OK? Is there an easier way to do this?

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# Homework Help: I feel stupid asking but

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