Find the partial derivative of the dependent variable or function with respect to each of the independent variables.f(x, y) = x3 - 5x2y - 4xy3
A. 
= 3x2 + 2xy - 4y3; 
= -5x2 + 3xy2
B. 
= 3x2; 
= -5x2 - 12xy2
C. 
= 3x2 - 10xy - 4y3; 
= -5x2 - 12xy2
D. 
= x2 - 5xy - 4y3; 
= -5x2 - 4xy2
Answer: C
Mathematics
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B. 
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