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IntegralsVolumeRcg - Mike Truong WeBWorK problems WeBWorK...

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Mike Truong WeBWorK @ Dept of Mathematics and Statistics @ SDSU WeBWorK problems. WeBWorK assignment 09IntegralsVolumeRcg due 03/07/2008 at 09:00am PST. 1. (1 pt) Consider the blue vertical line shown above (click on graph for better view) connecting the graphs y = g ( x ) = sin ( 1 x ) and y = f ( x ) = cos ( 2 x ) . Referring to this blue line, match the statements below about rotating this line with the corresponding statements about the result obtained. 1. The result of rotating the line about the x -axis is 2. The result of rotating the line about the y -axis is 3. The result of rotating the line about the line y = 1 is 4. The result of rotating the line about the line x = - 2 is 5. The result of rotating the line about the line x = π is 6. The result of rotating the line about the line y = - 2 is 7. The result of rotating the line about the line y = π 8. The result of rotating the line about the line y = - π A. a cylinder of radius π - x and height cos ( 2 x ) - sin ( 1 x ) B. an annulus with inner radius 2 + sin ( 1 x ) and outer ra- dius 2 + cos ( 2 x ) C. an annulus with inner radius π + sin ( 1 x ) and outer ra- dius π + cos ( 2 x ) D. an annulus with inner radius π - cos ( 2 x )
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