# Thread: Calculus question regarding term

1. ## Calculus question regarding term

Hi folks,

I got stuck on this one.
Can anyone solve this for me, I really got no clue how to start.
I need an equation.
Sorry for the bad picture quality.

Thanks,
Rafael.

2. You "need an equation" for which part?

Please reply with clarification, including a listing of what you have tried so far. Thank you!

3. I know that it is permissible, I would appreciate an equation for the first and second task. The problem is, that I do not know how to prove it in a mathematical way.

is the limit lim n --> infinity , a n(sub n) = 0 ?
Is the term decreasing?