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. \(y=(1-x)^{2 / 3}\)
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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Get started for freeSketch the graph of the function. Choose a scale that allows all relative extrema and points of inflection to be identified on the graph. \(y=x^{4}-2 x^{2}\)
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. \(y=x^{4 / 3}\)
The table lists the average monthly Social Security benefits \(B\) (in dollars) for retired workers aged 62 and over from 1998 through 2005 . A model for the data is \(B=\frac{582.6+38.38 t}{1+0.025 t-0.0009 t^{2}}, \quad 8 \leq t \leq 15\) where \(t=8\) corresponds to 1998 . $$ \begin{array}{|l|l|l|l|l|l|l|l|l|} \hline t & 8 & 9 & 10 & 11 & 12 & 13 & 14 & 15 \\ \hline B & 780 & 804 & 844 & 874 & 895 & 922 & 955 & 1002 \\ \hline \end{array} $$ (a) Use a graphing utility to create a scatter plot of the data and graph the model in the same viewing window. How well does the model fit the data? (b) Use the model to predict the average monthly benefit in \(2008 .\) (c) Should this model be used to predict the average monthly Social Security benefits in future years? Why or why not?
Sketch the graph of the function. Choose a scale that allows all relative extrema and points of inflection to be identified on the graph. \(y=x^{3}-4 x^{2}+6\)
Find the differential \(d y\). \(y=3 x^{2}-4\)
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