(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

If x = yz and y = 2sin(y+z), find dx/dy and d^2x/dy^2

2. Relevant equations

3. The attempt at a solution

I am beyond confused at how to even start this one, the problem is not like any of the examples in my book.

I know x = ydz + zdy but dont know how to deal with z and dz?

Thanks for the help

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# Partial differentiation confused

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