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Black Book Advanced Problems in MathematicsMathematicsIndefinite and Definite Integration

The value of : _ n ( 1 n n+1 + 1 n n+2 + 1 n n+3 + + 1 n 2n ) is :

Options

  1. A2 - 1
  2. B2( 2 - 1)
  3. C2 + 1
  4. D2( 2 + 1)

Correct answer

B. 2( 2 - 1)

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