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Problems in Mathematical Analysis.pdf - pwp.net.ipl.pt

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Sec. 10] The Area of a Surface of Revolution 167<br />

Example 1. F<strong>in</strong>d the area of a surface formed by rotation, about the<br />

x-axis, of a loop of the curve 9i/ 2 = ;t(3 x)* (Fig. 54).<br />

Solution. For the upper part of the curve, when (X*

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