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Let f(x,y)=(x3+y4)5f ( x , y ) = \left( x ^ { 3 } + y ^ { 4 } \right) ^ { 5 }

Question 123

Multiple Choice

Let f(x,y) =(x3+y4) 5f ( x , y ) = \left( x ^ { 3 } + y ^ { 4 } \right) ^ { 5 } . Find the value of fxyfyxf _ { x y } - f _ { y x } at the point (1,2) ( 1,2 ) .


A) 32- 32
B) 16- 16
C) 8- 8
D) 4- 4
E) 0
F) 4
G) 8
H) 16

Correct Answer:

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