Let z = (x, y) = 3x 3 + 4x 2 y - 2y 2 . Find
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Let z = ƒ(x, y) = 3x3 + 4x2y - 2y2. Find the following.
(a) ∂z/dx
(b) ∂z/dy(-1, 4)
(c) ƒxy(2, -1)
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