Find (f/x) y , and (f /y) x for each of the following functions, where a, b,
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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 = a cos2 (bxy),
(b) f = a exp(−b(x2 + y2).
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