Chapter 6: Problem 4
How are the derivative formulas for the hyperbolic functions and the trigonometric functions alike? How are they different?
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Chapter 6: Problem 4
How are the derivative formulas for the hyperbolic functions and the trigonometric functions alike? How are they different?
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Compute the following derivatives using the method of your choice. $$\frac{d}{d x}\left[\left(\frac{1}{x}\right)^{x}\right]$$
A cylindrical water tank has height 8 m and radius \(2 \mathrm{m}\) (see figure). a. If the tank is full of water, how much work is required to pump the water to the level of the top of the tank and out of the tank? b. Is it true that it takes half as much work to pump the water out of the tank when it is half full as when it is full? Explain.
Evaluate the following integrals. \(\int \frac{\cos \theta}{9-\sin ^{2} \theta} d \theta\)
a. Show that the critical points of \(f(x)=\frac{\cosh x}{x}\) satisfy \(x=\operatorname{coth} x\). b. Use a root finder to approximate the critical points of \(f\).
Recall that the inverse hyperbolic tangent is defined as \(y=\tanh ^{-1} x
\Leftrightarrow x=\tanh y,\) for \(-1
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