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Black Book Advanced Problems in MathematicsMathematicsContinuity and Differentiability

Let f_n(x) + f_n(y) = x^n + y^n x^n y^n x, y R - 0 where n N and g(x) = f₂(x), f₃(x), 1 2 x R - 0 The number of values of x for which g(x) is non-differentiable ( x R - 0 ) :

Options

  1. A3
  2. B4
  3. C5
  4. D1

Correct answer

A. 3

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