Evaluate the following integral:
Let us assume .....equation 1
By property, we know that
……..equation 2
Adding equation 1 and 2
Thus
We know
Since and
……equation 3
Let tan2x = y
Differentiating both sides
2 tanxsec2xdx = dy
For
y = ∞
For
y = 0
substituting values in equation 3
since