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Black Book Advanced Problems in MathematicsMathematicsContinuity and Differentiability

Let f(x) = cases ^2 x , & x is rational - ^2 x , & x is irrational cases , then set of points, where f(x) is continuous, is :

Options

  1. A(2n + 1) 2 , n I
  2. Ba null set
  3. Cn , n I
  4. Dset of all rational numbers

Correct answer

C. n , n I

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