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Calculate the Values Of fx\frac { \partial f } { \partial x }

Question 2

Multiple Choice

Calculate the values of fx\frac { \partial f } { \partial x } , fy\frac { \partial f } { \partial y } , and fz\frac { \partial f } { \partial z } at (8,3,4) ( 8,3,4 ) . f(x,y,z) =xyzf ( x , y , z ) = x y z


A) fx(8,3,4) =12\left. \frac { \partial f } { \partial x } \right| _ { ( 8,3,4 ) } = 12 , fy(8,3,4) =32\left. \frac { \partial f } { \partial y } \right| _ { ( 8,3,4 ) } = 32 , fy(8,3,4) =0\left. \frac { \partial f } { \partial y } \right| _ { ( 8,3,4 ) } = 0
B) fx(8,3,4) =24\left. \frac { \partial f } { \partial x } \right| _ { ( 8,3,4 ) } = 24 , fy(8,3,4) =32\left. \frac { \partial f } { \partial y } \right| _ { ( 8,3,4 ) } = 32 , fy(8,3,4) =12\left. \frac { \partial f } { \partial y } \right| _ { ( 8,3,4 ) } = 12
C) fx(8,3,4) =12\left. \frac { \partial f } { \partial x } \right| _ { ( 8,3,4 ) } = 12 , fy(8,3,4) =24\left. \frac { \partial f } { \partial y } \right| _ { ( 8,3,4 ) } = 24 , fy(8,3,4) =32\left. \frac { \partial f } { \partial y } \right| _ { ( 8,3,4 ) } = 32
D) fx(8,3,4) =12\left. \frac { \partial f } { \partial x } \right| _ { ( 8,3,4 ) } = 12 , fy(8,3,4) =32\left. \frac { \partial f } { \partial y } \right| _ { ( 8,3,4 ) } = 32 , fy(8,3,4) =24\left. \frac { \partial f } { \partial y } \right| _ { ( 8,3,4 ) } = 24
E) fx(8,3,4) =32\left. \frac { \partial f } { \partial x } \right| _ { ( 8,3,4 ) } = 32 , fy(8,3,4) =12\left. \frac { \partial f } { \partial y } \right| _ { ( 8,3,4 ) } = 12 , fy(8,3,4) =24\left. \frac { \partial f } { \partial y } \right| _ { ( 8,3,4 ) } = 24

Correct Answer:

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