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 Evaluate e2x12xdx

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a
log⁡ex-e−x+C
b
log⁡ex+e−x+C
c
12log⁡ex+e−x+C
d
None of these

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detailed solution

Correct option is B

I=∫e2x−1e2x+1dx=∫(e2x-1)ex(e2x+1)exdx=∫ex−e−xex+e−xdx  Let     ex+e−x=t or     ex−e−xdx=dt ∴  I=∫dtt              =log⁡|t|+C               =log⁡ex+e−x+C


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