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Black Book Advanced Problems in MathematicsMathematicsIndefinite and Definite Integration

_ n ( 1 n n+1 + 1 n n+2 + + 1 n 4n ) is equal to :

Options

A2
B4
C2( 2 - 1)
D2 2 - 1

Correct answer

A. 2

Step-by-step solution

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