Let be the angle in Figure 16, where P = (x, (x)). In the setting

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Let θ be the angle in Figure 16, where P = (x, ƒ (x)). In the setting of the previous exercise, show that

de dt || xf'(x) - f(x)\ dx x + f(x) dt

Differentiate tan θ = ƒ(x)/x and observe that cos θ = x/√x+ ƒ(x)2.

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Calculus

ISBN: 9781319055844

4th Edition

Authors: Jon Rogawski, Colin Adams, Robert Franzosa

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