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Find the Gradient Field of the Function f(x,y,z)=x6y9+x6z8f ( x , y , z ) = x ^ { 6 } y ^ { 9 } + \frac { x ^ { 6 } } { z ^ { 8 } }

Question 213

Multiple Choice

Find the gradient field of the function.
- f(x,y,z) =x6y9+x6z8f ( x , y , z ) = x ^ { 6 } y ^ { 9 } + \frac { x ^ { 6 } } { z ^ { 8 } }


A) f=(6x5+6x5) i+9y8j+8z9k{\nabla} f = \left( 6 \mathrm { x } ^ { 5 } + 6 \mathrm { x } ^ { 5 } \right) \mathbf { i } + 9 \mathrm { y } ^ { 8 } \mathbf { j } + \frac { 8 } { \mathrm { z } ^ { 9 } } \mathbf { k }
B) f=(6x5+6x5) i+9y8j8z9k{\nabla} f = \left( 6 \mathrm { x } ^ { 5 } + 6 \mathrm { x } ^ { 5 } \right) \mathbf { i } + 9 \mathrm { y } ^ { 8 } \mathrm { j } - \frac { 8 } { \mathrm { z } ^ { 9 } } \mathbf { k }
C) f=(6x5y9+6x5z8) i+9x6y8j8x6z9k{\nabla} f = \left( 6 x ^ { 5 } y ^ { 9 } + \frac { 6 x ^ { 5 } } { z ^ { 8 } } \right) i + 9 x ^ { 6 } y ^ { 8 } j - \frac { 8 x ^ { 6 } } { z ^ { 9 } } k
D) f=6x5y9i+9x6y88x6z9k{\nabla} f = 6 x ^ { 5 } y ^ { 9 } i + 9 x ^ { 6 } y 8 - \frac { 8 x ^ { 6 } } { z ^ { 9 } } k

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