Question: Prove that is differentiable on R2 for all a f(x, y) = Itx2+y2) (x, y)(0.0) 0

Prove that
Prove that is differentiable on R2 for all a < 3/2.

is differentiable on R2 for all a

f(x, y) = Itx2+y2)" (x, y)(0.0) 0

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