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» Online Classroom   » Tech Support   » StarPilot   » Math functions with SP-89

   
Author Topic: Math functions with SP-89
vjwilliams


 - posted November 29, 2002 02:28 PM      Profile for vjwilliams           Edit/Delete Post 
Math functions with SP-89

The TI-89 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 TI-calculators, 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.



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