In this lecture you will learn how to determine Volume by the Method of Cylindrical Shells. Our instructor will start with the three equations of Cylindrical Shells. The first is Rotation about the y-axis, the second is Rotation about the y-axis with two curves, and the third is Rotation about the x-axis. The lecture is finished off with five complete video examples.
AP Calculus I/AB > Volume by Method of Cylindrical Shells
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Volume by Method of Cylindrical Shells
I highly recommend
starting with a sketch of the functions involved and drawing in a
sample radius!
I recommend
memorizing the formulas but also understanding the geometry that
leads to the formulas.
If an interval is
not given, you may need to set the two functions equal in order to
determine the interval involved.
Sometimes,
geometrical considerations can help you to check your results or
even provide a non-calculus way to finish a problem.