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Black Book Advanced Problems in MathematicsMathematicsFunctions

Let f(x) = x 1+x^2 , then fofofo of _ n times (x) is :

Options

  1. Ax 1 + ( _ r=1 ^n r ) x^2
  2. Bx 1 + ( _ r=1 ^n 1 ) x^2
  3. C( x 1+x^2 )^n
  4. Dnx 1+nx^2

Correct answer

B. x 1 + ( _ r=1 ^n 1 ) x^2

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