Radius of Convergence for a Power Series

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Uploaded by on Jun 26, 2009

Radius of Convergence for a Power Series - In this video, I discuss how to find the radius of converge. It is easy after you find the INTERVAL of convergence.
I get tons of questions about it though, so I thought it was time for a video. : )
Visit http://PatrickJMT.com for tons more free math videos.

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Uploader Comments (patrickJMT)

  • ok, I have one question. You said to find the radius of convergence, just find the interval right? let say you have an interval of -infinity<x<infinity, x =/= 0

    what does the radius of convergence will be then?

    I'm suppose to find Maclaurin series of (1-cosx)/x. I did get the series though. But I'm confused with the radius of convergence.

    Help me please.

  • @abthurd take length of the interval and divide by 2. that gives the radius.

  • You are making this a much easier class than anticipated. Thank you so much!

  • @THESILVERNARUTO happy that i could help : )

  • you make scary calculus terms sound very simple! thanks!

  • @icezamboni perfect : ) that is what i try to do. and, it is just math... hard for everyone at first, it just takes a bit of time to digest

Top Comments

  • i should keep all the 'outtakes' i make where i mess up and post some of those - you can hear all kinds of noise and expletives when i mess up 8 minutes into a video...

  • I think i speak for a lot of people here when I say that you're a great teacher. Your videos are informative and helpful. My professor just like a lot of people here doesn't know much English and goes way too fast!! it really sucks but I feel a lot better knowing that I can watch your videos and understand it a lot better.

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All Comments (64)

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  • thank you so much you have no idea how helpful this was for me. you are a saint.

  • You are the best, Mr PatrickJMT . Thanks for the videos!

  • wait i think im stupid for this but how do you get the length?

  • @Mega12475 you need to go back to high school math, good sir

  • why do the two points begin with a square bracket and end with a normal bracket, and vice versa ?

  • thank you <3

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