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kaiz122
 one year ago
Best ResponseYou've already chosen the best response.0\[f(x,y)= \sin(xy)\] at \[2,\frac{\pi}{4}\]

muhammad9t5
 one year ago
Best ResponseYou've already chosen the best response.0do you mean f(x)=sinx. f(y)=siny

kaiz122
 one year ago
Best ResponseYou've already chosen the best response.0no, f(x,y)= sin(xy) Find \[d_{\theta}f(2, \frac{\pi}{4})\]

terenzreignz
 one year ago
Best ResponseYou've already chosen the best response.0Okay, easiest way to do this is with gradients.

muhammad9t5
 one year ago
Best ResponseYou've already chosen the best response.0oh looks like composite function.

kaiz122
 one year ago
Best ResponseYou've already chosen the best response.0my answer is 0. is this right?

terenzreignz
 one year ago
Best ResponseYou've already chosen the best response.0Sorry, was preoccupied. The directional derivative of a function in the direction of the vector v is given by this formula: \[\large \nabla f(x,y) \cdot \frac{v}{v}\]

terenzreignz
 one year ago
Best ResponseYou've already chosen the best response.0So, first, you need to get the unit vector of \[<2, \frac{\pi}{4}>\]
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