Can someone help me out with what I believe who.d be a straight chain rule application?(adsbygoogle = window.adsbygoogle || []).push({});

D/dx (dy/dx)^2

I would think, applying the chain rule, you get

2 (dy/dx) d/dx (dy/dx) = 2 (dy/dx) (d2y/dx2)

But, from the papers I checked, the (dy/dx) in the answer goes away, leaving just

2 (d2y/dx2)

What am I missing?

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# Chain rule help

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