Author

Topic: Math functions with SP89

vjwilliams

posted November 29, 2002 02:28 PM
Math functions with SP89
The TI89 and later versions have very small numbers in the display for doing conventional math operations with the calculators. To overcome this we have built a custom math function display that you access with the custom keys. From anywhere within StarPilot, press [F5] [F5] to enter this mode. You can do all conventional math functions, including trig, etc, with large displays. When done press [ESC]. Note that in all TIcalculators, they give back what they call exact answers. If you do 15/4 you will get back 15/4 as an answer, since that is in some sense technically the correct exact answer. If you want—as we usually do—a decimal answer, enter a decimal point in any of the numbers, ie 15/4. and you will get 3.75. In short, we must learn to enter a decimal point at least once, anywhere, when doing math functions in these calculators.


