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Let f(x,y)=2xey+3yexf ( x , y ) = 2 x e ^ { y } + 3 y e ^ { x }

Question 17

Multiple Choice

Let f(x,y) =2xey+3yexf ( x , y ) = 2 x e ^ { y } + 3 y e ^ { x } . Then the maximum value of the directional derivative Duf(0,0) D _ { \mathrm { u } } f ( 0,0 ) is


A) 4134 \sqrt { 13 }
B) 3133 \sqrt { 13 }
C) 2132 \sqrt { 13 }
D) 13\sqrt { 13 }
E) 13

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