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Give an Appropriate Answer f(x,y)=lnyxf ( x , y ) = \ln y ^ { x }

Question 22

Multiple Choice

Give an appropriate answer.
- f(x,y) =lnyxf ( x , y ) = \ln y ^ { x }


A) fx=0;fy=xy\frac { \partial f } { \partial x } = 0 ; \frac { \partial f } { \partial y } = - \frac { x } { y }
B) fx=xlny;fy=xy\frac { \partial f } { \partial x } = x \ln y ; \frac { \partial f } { \partial y } = - \frac { x } { y }
C) fx=lny;fy=xlny\frac { \partial f } { \partial x } = \ln y ; \frac { \partial f } { \partial y } = - x \ln y
D) fx=lny;fy=xy\frac { \partial f } { \partial x } = \ln y ; \frac { \partial f } { \partial y } = \frac { x } { y }

Correct Answer:

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