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Give an Appropriate Answer f(x,y)=xyeyf ( x , y ) = x y e ^ { - y }

Question 183

Multiple Choice

Give an appropriate answer.
- f(x,y) =xyeyf ( x , y ) = x y e ^ { - y }


A) fx=yy;fy=xyey\frac { \partial f } { \partial x } = y ^ { - y } ; \frac { \partial f } { \partial y } = - x y e ^ { - y }
B) fx=yey;fy=xey(1y) \frac { \partial f } { \partial x } = y e ^ { - y ; } \frac { \partial f } { \partial y } = x e ^ { - y } ( 1 - y )
C) fx=yey;fy=xey\frac { \partial f } { \partial x } = y e ^ { - y } ; \frac { \partial f } { \partial y } = x e ^ { - y }
D) fx=yey;fy=xey(y1) \frac { \partial f } { \partial x } = y e ^ { - y } ; \frac { \partial f } { \partial y } = x e ^ { - y } ( y - 1 )

Correct Answer:

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