Answered: Year 2007 2008 2009 2010 Net Profit|…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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The table shows the net profits (in millions of dollars) for Microsoft from 2007 through 2014. (Source: Microsoft Corp.)
(a) Set up a system of equations to fit the data for the years 2007, 2008, 2009, and 2010 to a cubic model.
(b) Solve the system. Does the solution produce a reasonable model for determining net profits after 2010? Explain.

Year
2007
2008
2009
2010
Net Profit| 14,065
17,681 14,569 18,760
Year
2011
2012
2013
2014
Net Profit 23,150
23,171 22,453 22,074

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