Math Help - Integration with limits 1 and infinity.

1. Integration with limits 1 and infinity.

Show that the integration x*(theta*(1-theta)^(x-1)) dx with limits 1 and infinity equals 1/theta?

2. Re: Integration with limits 1 and infinity.

Hey the integrate you gave doesn,t give 1/theta

it end up giving something like

$\frac{\theta (1-log(1-\theta))}{(log^2(1-\theta))}$

*Unless i made a mistake*