Evaluate the first derivative of the implicit function: 4×2

1.	Evaluate the first derivative of the implicit function: 4×2 + 2xy + y2 = 0
A.	(4x + y) / (x + y)
B.	–[(4x + y) / (x + y)]
C.	(4x – y) / (x + y)
D.	–[(4x + y) / (x –y)]
Answer» C. (4x – y) / (x + y)

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