I think I'll get banned soon posting multiple questions at the same time, but allow me to continue,(adsbygoogle = window.adsbygoogle || []).push({});

if f,g:R-->R both of class C2(differentiable twice)

Define F(x,y)=f(x+g(y))

Show that (DxF)(DxDyF)=(DyF)(D^2xF) where D^2xF is second order partial derivative with respect to x

I'm dying here...

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# Homework Help: Another question thrown at you

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