f(x, y) = sin(y/x)x3 + x2y find the value of fx + fy at (x,y)=(4,4). – McqOptions

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1.	f(x, y) = sin(y/x)x3 + x2y find the value of fx + fy at (x,y)=(4,4).
A.	0
B.	78
C.	42 . 3(sin(1) + 1)
D.	-12
Answer» D. -12

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