- #1
tinylights
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Homework Statement
A few examples done in class that I didn't understand are as follows:
(Find out if convergent or divergent)
integral 0-->infinity ( x / (x^3 + 1) )
integral 1-->infinity ( (2+e^(-x) ) / x )
Homework Equations
None
The Attempt at a Solution
Basically, I have NO idea where to begin. My professor seriously glossed over this concept in class; he basically just stated the theorem and then said "just compare it to another function". What functions? How? How do we know if we need a converging or diverging function? Can I get a careful walkthrough of some example problems so that this concept sinks in?
Thank you.