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1. For each of the following functions, find Oz and oz ax ay (a) z=5x4 + 3x2y+y3 (b) z= (x3 +14)3 (c) z= (x3 +

1. For each of the following functions, find Oz and oz ax ay (a) z=5x4 + 3x2y+y3 (b) z= (x3 +14)3 (c) z= (x3 + 12)4 (d) z = In(xy 2 2. For each of the functions in exercise 1, find a2z a2z a2z nd 92 z ax2 ' ay2 ' ayax axay

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