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First and Second Derivatives : Using Implicit Differentiation


I'm trying to verify my answer for the first derivative, and see if I got the second one right as well. For the first derivative I got
I think I'm having a problem with the 2nd derivative because I got
It doesn't look right to me, so I'd like to figure out where I went wrong by looking at the steps.

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Solution Summary

Implicit differentiation is investigated.