I am looking for a tutorial on this kind of question

[transgalactic]

Main Question or Discussion Point

find the range of convergence of this column:

http://img526.imageshack.us/my.php?image=img8863uu3.jpg

 

[HallsofIvy]

"range of convergence"? How does that have anything to do with convergence? And what do you mean by "column"?

 

[transgalactic]

i really new to this

can you guess what they wanted from me???

 

[Defennder]

Where did you get that question from? What does say in full?