Suppose f is a differentiable function of x and y, and g(r, s) = f(2r - s, s2 - 3r). Use the table of values below to calculate g,(2, 5) and gs(2, 5). fx fy (-1, 19) 2 7 (2, 5) 5 2 9. 4 g,(2, 5) = 9s(2, 5)

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