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Washer Method

Washer Method. What if cross sectional area created is not a disc?. Find the volume when the region enclosed by y = x and y = x 2 is rotated about the x-axis? - creates a horn shaped cone - area of the cone will be the outside area minus the inside area – shape of a washer. Example.

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Washer Method

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  1. Washer Method

  2. What if cross sectional area created is not a disc? Find the volume when the region enclosed by y = x and y = x2 is rotated about the x-axis? - creates a horn shaped cone - area of the cone will be the outside area minus the inside area – shape of a washer

  3. Example Find the volume of a solid obtained by rotating the region bounded by y = x and y = x2 about the line y = 2

  4. Example Find the volume of the solid formed by revolving the region bounded by the graphs and about the x-axis

  5. Example Find the volume of the solid formed by revolving the region bounded by the graphs and about the line y = 2

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