The definite integral is .
Write down the expression in partial fraction decomposition.
\Equate coefficients of terms.
Equate constant terms.
\Subtract equations (3) from equations (2).
\Substitute in equations (2).
Substitute the values and
in equation (1).
.
Consider then
.
Consider then
.
Substitute the corresponding values in the above equation.
\Substitute and
.
.
.