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Black Book Advanced Problems in MathematicsMathematicsIndefinite and Definite Integration

If f( ) = 4 3 (1 - ^6 - ^6 ) , then _ n 1 n [ f ( 1 n ) + f ( 2 n ) + f ( 3 n ) + + f ( n n ) ] =

Options

  1. A1 - 1 2
  2. B1 - 2
  3. C2 2
  4. D1 - 2 2

Correct answer

D. 1 - 2 2

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