6.2 Volume Disk Washer methods part 1 Blank.notebook
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April 04, 2017
6.2 Volume: The Disk and Washer Methods
Lets examine the volume of a solid that is generated when the region under the line from to is rotated about the xaxis.
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A) Determine the volume of the cone created above using integration.
6.2 Volume Disk Washer methods part 1 Blank.notebook
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April 04, 2017
B) Verify your results using geometric formula for volume of a cone.
Note: Because the function that was rotated about the xaxis was linear, the resulting shape was a cone. There are many shapes used in world today that do not have geometric formulas. (Anything with curves) For these types of shapes "Integration" enables us to determine their volumes.
Example 1: Determine the volume of the solid that is generated when the region under from to is rotated about the xaxis. Include a detailed sketch of the region.
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6.2 Volume Disk Washer methods part 1 Blank.notebook
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April 04, 2017
Case 1: Horizontal Axis of Revolution
Volumes Of Revolutions: Disk Method
Note: is the function that represents the radius of the object. This may or may not be the same as the yvalue of the function depending on the location of horizontal axis of revolution. (May NOT be the xaxis)
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Caution: [a,b] are horizontal endpoints. (xvalues)
Example 2: Find the volume of the solid formed by revolving the region bounded by the graphs and about the line .
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6.2 Volume Disk Washer methods part 1 Blank.notebook
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April 04, 2017
Case 2: Vertical Axis of Revolution
Note: is the function that represents the radius of the object. This may or may not be the same as the xvalue of the function depending on the location of vertical axis of revolution. (May NOT be the yaxis)
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Caution: [c,d] are vertical endpoints. (yvalues)
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Example 3: Determine the volume of the solid that is generated when the region under from to is rotated about the yaxis. Include a detailed sketch of the region.