Prove that if a > 1/2, then is differentiable at (0, 0). ylog(2 y x y) (x,
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is differentiable at (0, 0).
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ylog(2 y x y) (x, y) (0, 0) (0.0) f(a. y)
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The function has continuous first partials at any x y 0 0 hence is differentiable there by Theore...View the full answer
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