Arizona Mathematical Software

Data Files

We have online the data files used in the text Exploring Differential Equations via Graphics and Data, by David Lomen and David Lovelock (Wiley 1996), and the Arizona Mathematical Software program Twiddle. They are listed here by chapter. The data sets can be seen graphically and then downloaded individually, or you can download all the datafiles at once in the form of a tar file or a zip file.

Data Sorted by Chapter

| 1 | 2 | 4 | 5 | 6 | 8 | 11 | 13 |

Chapter 1

BOMBAYThe total number of deaths in Bombay from a plague spread by rats during the period December 1905 to July 1906.Increasing, Sigmoidal
MEMORYThe average percentage memory loss as a function of time.Decreasing, Concave Up
PLAGUETotal number of deaths by the week from August 1665 to October 1665 during the Great Plague of London.Increasing, Sigmoidal
PORSCHEThe velocity of an accelerating Porsche 944 Turbo as a function of time.Increasing, Concave Down
QCKSORTAverage times to sort a list of various lengths using the Quicksort algorithm.Increasing, Linear
SHAPEThe volume of a vessel as a function of its height.Increasing, Sigmoidal
WATERThe movement of the wetting front as a function of time.Increasing, Concave Down

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