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Let f(x,y)=x1y+2f ( x , y ) = \frac { x - 1 } { y + 2 }

Question 44

Multiple Choice

Let f(x,y) =x1y+2f ( x , y ) = \frac { x - 1 } { y + 2 } . Then f(x+Δx,y) f(x,y) f ( x + \Delta x , y ) - f ( x , y ) is


A) Δxy+1\frac { \Delta x } { y + 1 }
B) 2Δxy+2\frac { 2 \Delta x } { y + 2 }
C) Δxy+2- \frac { \Delta x } { y + 2 }
D) Δxy2\frac { \Delta x } { y - 2 }
E) Δxy+2\frac { \Delta x } { y + 2 }

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