Find (f/x) y , and (f/y) x for each of the following functions, where a, b, and
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Find (∂f/∂x)y, and (∂f/∂y)x for each of the following functions, where a, b, and c are constants.
(a) f = (x + y)/(c + x),
(b) f = (ax + by)−2.
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