Preliminary steps
The following integrals require a preliminary step such as long division or a change of variables before using partial fractions. Evaluate these integrals.
Solution:-
Step1
Apply integral substitution
, u=g(x)
u= du=udx
=
du
Step2
Apply integral substitution
, u=g(x)
v= dv=
=
=
=
=
=)
= )
=-2(arctanh(v)-v))
=-2(arctanh()-
))
=2(- arctanh(
))
Therefore,
=2(
- arctanh(
))+C