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Concept explainers
Polynomial Models Use a graphing calculator to do the following cubic and quartic regression problems. (See Examples 5 and 6.)
Gross National Income The following table shows the gross national income (GNI) in dollars per capita for middle- and upper- income countries for selected years. (Data from: Organization for Economic Cooperation and Development.)
Year | 2000 | 2002 | 2004 | 2006 | 2008 | 2010 | 2012 | 2014 |
GNI | 1768 | 1842 | 2335 | 3148 | 4403 | 5472 | 6949 | 7901 |
a. Plot the data with
b. Use cubic regression to find a third-order polynomial function
c. Graph
d. What does the model predict for the GNI in the year 2017?
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Chapter 3 Solutions
MATH W/APPLICAT.W/NOTES GDE +ACCESS CODE
- Q4arrow_forward3. Consider the initial value problem 9y" +12y' + 4y = 0, y(0) = a>0: y′(0) = −1. Solve the problem and find the value of a such that the solution of the initial value problem is always positive.arrow_forward5. Euler's equation. Determine the values of a for which all solutions of the equation 5 x²y" + axy' + y = 0 that have the form (A + B log x) x* or Ax¹¹ + Bä” tend to zero as a approaches 0.arrow_forward
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