How do I show that the sum of a convergent geometrical series 1+r+r^2+... > 1/2?
I understand how to do it for fixed numbers, but i dont know how to find the r value in this case. Thanks for the help!
I understand how to do it for fixed numbers, but i dont know how to find the r value in this case. Thanks for the help!
1 Answer
Mar 4, 2018
See below.
Explanation:
Calling
now if
so if we need