wietni let 2,4 h(x,y)= (1+2+0 40 if (xy) +(0,0) 8 "+69⁰ o if (x,y) = (0,0) exiyo ah 1) Show that 3h (0,0) and dy (0,0) exist. ах бу b. Show that h is not differentiable at (0,0) by showing that h is not continous at (0,0)

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