Find all second order partial derivatives for the following functions: a) z = xe-2y +x In(y) + y ln(x) b) f(x,y, z) = x cos(y + 2z) əz c) Use Implicit differentiation to find and for x? – y² + z² – 2z = 4 əx ду 9.

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A: The given function is:f(x,y)=3x2y-2xy2+y3-9P=(2, 1)Direction vector:  v=3i-5j

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A: y=(8x4-5x2+8)4 d dx(xn)=nxn-1ddx(constant)=0

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A: Given: Since you have asked multiple question, we will solve the first question for you. If youwant…

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