Mark (√) against the correct answer in each of the following:
To find: Value of 
Formula used: 
We have, 
… (i)
Putting tan-1x = t , x = tant
dx = sec2t dt
When x = tant
Taking 1st function as 
and second function as 
1
Mark (√) against the correct answer in each of the following:
To find: Value of
Formula used:
We have, … (i)
Putting tan-1x = t , x = tant
dx = sec2t dt
When x = tant
Taking 1st function as and second function as