Question

Please help quick!!
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Answer 1

Hi !

`∫ (t)/(t + 1)dt`

We need to prove that it is equal to

`∫ (u - 1)/(u)du`

As per given options, Substitute u by t+1

`= > ∫ (u - 1)/(t + 1) du`

Then given t = u-1

`= > ∫ (t)/(t + 1) du`

Then substitue the third given value also

`= > ∫ (t)/(t + 1) dt`

Therefore, it's proved

~Hope it helps