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Let f(x, y, z) = xy+ z and x = s, y = st, and z = st. (a) Calculate the primary derivatives dy

Let f(x, y, z) = xy+ z and x = s, y = st, and z = st. (a) Calculate the primary derivatives dy af = 4x32 =2x+y =2z (b) Calculate 8 = 2st as = as 3st 3 = 35212 as I (c) Use the Chain Rule to compute of S 88

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