Question: Hello, fellow engineers, could you help me with 2 calculation exercises. A. Find dy / dx by implicit derivation. frac{dy}{dx},:lnsqrt{x^2+y^2}+x+y=4 B. find the first partial

Hello, fellow engineers, could you help me with 2 calculation exercises.

A. Find dy / dx by implicit derivation.

\frac{dy}{dx},\:ln\sqrt{x^2+y^2}+x+y=4

B. find the first partial derivatives

of z by implicit derivation

e^{xz}+xy=0

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