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Compute the directional derivative of the function f(x,y)=(√1+3x^2+8y^2) at the point (0,−3) in the direction of...

Compute the directional derivative of the function f(x,y)=(√1+3x^2+8y^2) at the point (0,−3) in the direction of the vector →v=2ˆi−3ˆj. Enter an exact answer involving radicals as necessary.

  

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