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Black Book Advanced Problems in MathematicsMathematicsContinuity and Differentiability

If f(x) = _ n [ _ i=1 ^n ( x 2^i ) ] then f'(x) is equal to :

Options

  1. Ax x
  2. Bx x
  3. Cx x - x x^2
  4. Dx - x x x^2

Correct answer

C. x x - x x^2

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