Question: Verify that fy = fx for the following function. 6.5 f(x, y) = 4xy - 5xy 3.3 f = 24xy - 20xy 6.4 fy

Verify that fy = fx for the following function. 6.5 f(x, y)

Verify that fy = fx for the following function. 6.5 f(x, y) = 4xy - 5xy 3.3 f = 24xy - 20xy 6.4 fy = 20x y* - 15x*y? "

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