Find the second-order partial derivative.Find fxy when f(x,y) = 10x2y4 - 7x3y5.

A. 80xy3 - 21x2y4
B. 160xy3 - 21x2y4
C. 160xy3 - 105x2y4
D. 80xy3 - 105x2y4


Answer: D

Mathematics

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