Computing the Volume of a Paraboloid | MIT 18.01SC Single Variable Calculus, Fall 2010

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Uploaded by on Jan 7, 2011

Computing the Volume of a Paraboloid

Instructor: Christine Breiner

View the complete course: http://ocw.mit.edu/18-01SCF10

License: Creative Commons BY-NC-SA
More information at http://ocw.mit.edu/terms
More courses at http://ocw.mit.edu

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  • very interesting imo, thanks

  • Isn't this just the shell method, in terms of y? So you could've just went right to the integral right? This is just the entire idea behind the cylindrical shell method right? Except that would have a 2pi, so maybe not.

  • @TheDaekle Well from the H we get a two dimensional area, correct, but we are not missing it. The third dimension comes the parabola itself. If we were doing this to a a cylinder, we would get the extra dimension from the height. In this parabola, the "base" (the extra dimension) is held fixed by the fact that we did not provide a variable to change it [the steepness or what I am calling the "base"]. What I am trying to say is that the extra dimension comes from the coefficient (the 1/2 part).

  • I'm sorry, I may be confused but, If "H" is a length (lets say measured in metres for ease), then "H^2" is an area in metres squared, meaning the units of the final figure suggest we've calculated an area and not a volume. Have I misunderstood something? genuine question, not a criticism, I'm just curious how this works...

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