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int(1+2x+3x^(2)+4x^(3)+ . . .)dx=...

`int(1+2x+3x^(2)+4x^(3)+ . . .)dx=`

A

a)`(1+x)^(-1)+c`

B

b) `(1-x)^(-1)+c`

C

c)`(1-x)^(-1)-1+c`

D

d)None of these

Text Solution

Verified by Experts

The correct Answer is:
B
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