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Homework Statement
However, I'm what I'm confused about is how to determine when to start the summation at 0 and what exactly does it mean when the summation starts at for example, 2.
I'm asking this because in the textbook that we are using for this course, sometimes they use the summation starting at 1 and sometimes starting at 0.
So how do we determine the the answer to the above question and if someone can just explain to me when to start the summation at a different number other than 0.
Homework Equations
Ratio test eqn. lim n->infinity |An+1/An|
The Attempt at a Solution
Took the limit and factored the absolute value of x however the summation starting at 2 is confusing me.