Chapter 9: Problem 28
Use a graphing utility to graph the function. Choose a window that allows all relative extrema and points of inflection to be identified on the graph. \(y=(1-x)^{2 / 3}\)
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Chapter 9: Problem 28
Use a graphing utility to graph the function. Choose a window that allows all relative extrema and points of inflection to be identified on the graph. \(y=(1-x)^{2 / 3}\)
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Sketch the graph of the function. Label the intercepts, relative extrema, points of inflection, and asymptotes. Then state the domain of the function. \(y=x \sqrt{4-x^{2}}\)
Sketch a graph of a function \(f\) having the given characteristics. (There are
many correct answers.)
$$
\begin{aligned}
&f(-2)=f(0)=0 \\
&f^{\prime}(x)>0 \text { if } x<-1 \\
&f^{\prime}(x)<0 \text { if }-1
Find an equation of the tangent line to the function at the given point. Then find the function values and the tangent line values at \(f(x+\Delta x)\) and \(y(x+\Delta x)\) for \(\Delta x=-0.01\) and \(0.01\). \(f(x)=\frac{x}{x^{2}+1}\) \((0,0)\)
The cost \(C\) (in dollars) of removing \(p \%\) of the air pollutants in the stack emission of a utility company that burns coal is modeled by \(C=80,000 p /(100-p), \quad 0 \leq p<100\) (a) Find the costs of removing \(15 \%, 50 \%\), and \(90 \%\). (b) Find the limit of \(C\) as \(p \rightarrow 100^{-}\). Interpret the limit in the context of the problem. Use a graphing utility to verify your result.
Compare the values of \(d y\) and \(\Delta y\). \(y=2 x+1 \quad x=2 \quad \Delta x=d x=0.01\)
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