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Give an Appropriate Answer f(x,y)=(10x5y45)2f ( x , y ) = \left( 10 x ^ { 5 } y ^ { 4 } - 5 \right) ^ { 2 }

Question 18

Multiple Choice

Give an appropriate answer.
- f(x,y) =(10x5y45) 2f ( x , y ) = \left( 10 x ^ { 5 } y ^ { 4 } - 5 \right) ^ { 2 }


A) fx=50x4y4;fy=40x5y3\frac { \partial f } { \partial x } = 50 x ^ { 4 } y ^ { 4 } ; \frac { \partial f } { \partial y } = 40 x ^ { 5 } y ^ { 3 }
B) fx=100x4y4(10x5y45) ;fy=80x5y3(10x5y45) \frac { \partial f } { \partial x } = 100 x ^ { 4 } y ^ { 4 } \left( 10 x ^ { 5 } y ^ { 4 } - 5 \right) ; \frac { \partial f } { \partial y } = 80 x ^ { 5 } y ^ { 3 } \left( 10 x ^ { 5 } y ^ { 4 } - 5 \right)
C) fx=80x5y3(10x5y45) ;fy=100x4y4(10x5y45) \frac { \partial f } { \partial x } = 80 x ^ { 5 } y ^ { 3 } \left( 10 x ^ { 5 } y ^ { 4 } - 5 \right) ; \frac { \partial f } { \partial y } = 100 x ^ { 4 } y ^ { 4 } \left( 10 x ^ { 5 } y ^ { 4 } - 5 \right)
D) fx=2(10x5y45) ;fy=2(10x5y45) \frac { \partial f } { \partial x } = 2 \left( 10 x ^ { 5 } y ^ { 4 } - 5 \right) ; \frac { \partial f } { \partial y } = 2 \left( 10 x ^ { 5 } y ^ { 4 } - 5 \right)

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