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Stitz-Zeager_College_Algebra_e-book

Now consider a point x y on the ellipse applying

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Unformatted text preview: ’ then the quadratic and logistic models are arguably the winners with the power function model a close second. However, if we think about the science behind the spread of the flu, the logistic model gets an edge. For one thing, it takes into account that only a finite number of people will ever get the flu (according to our model, 10,739), whereas the quadratic model predicts no limit to the number of cases. As we have stated several times before in the text, mathematical models, regardless of their sophistication, are just that: models, and they all have their limitations.20 20 Speaking of limitations, as of June 3, 2009, there were 19,273 confirmed cases of influenza A (H1N1). This is well above our prediction of 10,739. Each time a new report is issued, the data set increases and the model must be recalculated. We leave this recalculation to the reader. 6.5 Applications of Exponential and Logarithmic Functions 6.5.3 391 Exercises 1. On May, 31, 2009, the Annual Percentage Rate listed at Jeff’s bank...
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