Question: Please explain as thoroughly as possible. I'm having trouble understanding. (1 point) Find the directional derivative of f(I, y) = x y + 2x y

Please explain as thoroughly as possible. I'm having trouble understanding.

(1 point) Find the directional derivative of f(I, y) = x y + 2x y at the point (-1, 3) in the direction 0 = #/4. The gradient of f is: Vf =( Vf(-1,3) = ( The directional derivative is

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