The integral is
.
.
If
is continuous on the interval
and has an infinite discontinuity at
, then
, the limit exists then function is convergent.
is discontinuous at
.
is discontinuous at
.
.

Apply formula:
.






.

Therefore, the series is converges to
.
Graph:
\Graph the integrand
.

Observe the graph:
\Using integration capabilities
.
The improper integral
is converges to
.