Answer to Question #66102 in Calculus for Manoj

Question #66102

Find the directional derivative of f(x,y) = {2 xy/x^2+y^2, (x,y) #(0,0) and 0, (x,y) =(0,0) at (0,0) in the direction of ( i) θ=π/2 (ii) θ= π/4

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