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The Links in the list below are Programs that JPD has created for use with the TI-83 TI-89 and TI-73 Graphing Calculators. They are tools for exploring mathematics and are available for free use, distribution, and modification. The Programs themselves can be downloaded and then sent directly to your TI-83/89/73 by using the TI GraphLink Cable and Software available at TIs web site.

 TI - 73 Calculator Programs Download a compressed file with all of the programs for the 73 Here TI - 83 and 83+ Calculator Programs Download a compressed file with all of the programs for the 83 Here TI - 89 Calculator Programs Download a compressed file with all of the programs for the 89 Here Heron's Formula: Explanation: The Area for a triangle can be computed using the three sides of a triangle. This formula is attributed to Heron of Alexandria but can be traced back to Archimedes. This formula is represented by Area=SQRT(s(s-a)(s-b)(s-c)), where s=(a+b+c)/2 or perimeter/2. Pythagorean Triples Generator: The Pythagorean Theorem is established as a2+b2=c2  Given a RIGHT Triangle where a and b are the lengths of the legs and c is the length of the hypotenuse.  We can define any a,b,and c that fits these criteria to be Pythagorean Triples. Looking at 3, 4, and 5 we have 32 + 42 = 52 or 9 + 16 = 25. This is the first in a long string of Pythagorean Triples. Prime Factorization is the process by which a whole number is broken down to its least prime factors. To do this we start with its very least prime factor that we know. Then we proceed in a similar manner until we get a sequence of factors that are prime and when multiplied give us the original whole number.
James P.Dildine

(c) 1999 - 2000 James P. Dildine