Volumes of Revolution - Cylindrical Shells

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Uploaded by on Oct 11, 2008

Volumes of Revolution - Cylindrical Shells. In this video I show to examples of finding volumes using the method of cylindrical shells.

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Education

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Standard YouTube License

  • likes, 7 dislikes

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Uploader Comments (patrickJMT)

  • hey quick question patrick, how do you know the shell radius is x?

  • @nikvenkata cause you are ' x ' units away from the y-axis

  • Patrick! Your videos are so helpful that I would send you heaping piles of boxes of dry erase markers just so you could keep on doing what you do! You helped me through one tough semester of calculus, here's to two more! THANK YOU!

  • @LosVideosDeLouis happy to help :) good luck in the rest of your classes!

  • gosh i hope SOPA passes so i can fail math and finally become the hobo i always dreamed of becoming

  • @olkst178 lol

Top Comments

  • im gonna make a t shirt that says: "PatrickJMT taught me calculus" and wear it to my math exam

  • you are an angel sent to save all my calculus students.

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All Comments (141)

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  • ALL professors teaching at universities who dont do youtube videos need to get fired so that the youtube teachers that know how to teach can get hired

  • Hypothetically, would it be incorrect to use dy and put everything in terms of y? Albeit more difficult, you would still get the same answer, no? I am referencing the point you made about rotational axes at approximately 1:08 in.

  • Thanks so much, huge help. Nice to see someone help so many ppl on the internet instead of posting garbage all the time

  • 7 people want to fail calculus

  • Why is it that most math teachers are completely and utterly ineffective at teaching basic concepts in higher-level math in person, while smart people such as PatrickJMT can use a dry-erase board to teach effectively?

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