$\"\"$

The function is $\"\"$ .

Multiply the numerator and denominator by $\"\"$ .

$\"\"$

Consider $\"\"$ .

Apply derivative on each side with respect to $\"\"$ .

$\"\"$

Substitute $\"\"$ and $\"\"$ .

$\"\"$

Integral of hyperbolic function : $\"\"$ .

$\"\"$

Substitute $\"\"$ in the above equation.

$\"\"$

$\"\"$ $\"\"$ .

$\"\"$

$\"\"$ $\"\"$ .