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Let f(x,y)=3xyx+yf ( x , y ) = \frac { 3 x - y } { x + y }

Question 219

Multiple Choice

Let f(x,y) =3xyx+yf ( x , y ) = \frac { 3 x - y } { x + y } . Find the value of the partial derivative fy(1,1) f _ { y } ( 1,1 ) .


A) 4- 4
B) 1
C) 2
D) 3
E) 4
F) 1- 1
G) 2- 2
H) 3- 3

Correct Answer:

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