Let $f ( x , y ) = 2 x \ln y$ Then the maximum value of the directional derivative $D _ { \mathrm { u } } f ( 4,1 )$ is

A)24
B)4
C)16
D)8
E)2

Name: Let $f ( x , y ) = 2 x \ln y$ Then the maximum value of the directional derivative $D _ { \mathrm { u } } f ( 4,1 )$ is A)24 B)4 C)16 D)8 E)2
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Question

Let $f ( x , y ) = 2 x \ln y$ Then the maximum value of the directional derivative $D _ { \mathrm { u } } f ( 4,1 )$ is

A)24
B)4
C)16
D)8
E)2

Quizplus · Accepted Answer

The Answer of Let $f ( x , y ) = 2 x \ln y$ Then the maximum value of the directional derivative $D _ { \mathrm { u } } f ( 4,1 )$ is

A)24
B)4
C)16
D)8
E)2

Let f(x,y)=2xln⁡yf ( x , y ) = 2 x \ln yf(x,y)=2xlny

Let $f ( x , y ) = 2 x \ln y$