If int(0)^(1)(e^(t)dt)/(t+1)=a, then int...

If `int_(0)^(1)(e^(t)dt)/(t+1)=a`, then `int_(b-1)^(b)(e^(-t)dt)/(t-b-1)` is equal to a)`ae^(-b)` b)`-ae^(-b)` c)`be^(-b)` d)None of these

A

`ae^(-b)`

B

`-ae^(-b)`

C

`be^(-b)`

D

None of these

Verified by Experts

The correct Answer is:

B

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