I'm completely new to this. I am a software developer and haven't had the calculus books open for about a quarter of a century so I do aplologize if this is not in the correct forum. Further I'm not even sure if the question is phrased correctly.
I'm basically trying to figure out the value of the summed series
where there are x elements in the series as x gets large. d and r are constants.
Hoping you can help or point me in the right direction.