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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 minimum value of _ k=1 ^ f_ 2k ( cosec ) + _ k=1 ^ f_ 2k ( ) , where k 2 ; k I is :

Options

  1. A1
  2. B2
  3. C2
  4. D4

Correct answer

B. 2

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