Find fx, fy, and f?.f(x, y, ?) = x2y + y2? + x?2
A. fx = 2xy + ?2; fy = x2 + 2y?; f? = y2 + 2x?
B. fx = 2xy + ?2; fy = x2 + y?; f? = y2 + x?
C. fx = 2xy; fy = x2 + 2y?; f? = y2 + 2x?
D. fx = 2y + ?2; fy = x2 + 2?; f? = y2 + 2x
Answer: A
Mathematics
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