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Find the Equation for the Level Surface of the Function f(x,y,z)=x2yxz+y2,(2,7,8)f ( x , y , z ) = \frac { x ^ { 2 } y } { x z + y ^ { 2 } } , ( 2,7,8 )

Question 268

Multiple Choice

Find the equation for the level surface of the function through the given point.
- f(x,y,z) =x2yxz+y2,(2,7,8) f ( x , y , z ) = \frac { x ^ { 2 } y } { x z + y ^ { 2 } } , ( 2,7,8 )


A) 2865=x2yxz+y2\frac { 28 } { 65 } = \frac { x ^ { 2 } y } { x z + y ^ { 2 } }
B) 65(xz+y2) =28x2y65 \left( x z + y ^ { 2 } \right) = 28 x ^ { 2 } y
C) 1439=x2yxz+y2\frac { 14 } { 39 } = \frac { x ^ { 2 } y } { x z + y ^ { 2 } }
D) 1465=x2yxz+y2\frac { 14 } { 65 } = \frac { \mathrm { x } ^ { 2 } \mathrm { y } } { \mathrm { xz } + \mathrm { y } ^ { 2 } }

Correct Answer:

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