First, click here to download a zipped file of the excel spreadsheet.

Next, use winzip to uncompress the file.

Once you open using excel, select to allow the macros in the spreadsheet.  (If you are unsure that the spreadsheet contains a virus then first use a virus checker).

Once opened, you can choose either the First Order worksheet or the Second Order worksheet.

Click on the scrollbar arrows to explore the effects of  t  in the First Order case.  In the Second order case, explore the effects of t or w.