The Complete Quadratic Formula Program Version 2.5 Copyright (c) 1999 Author: Ben Ilegbodu Date: 8/3/99 Format: BASIC for TI-83 Email: Benahimvp@aol.com **************************************************** Description: Math Program in which user inputs coefficients of a quadratic equation and finds out what X equals and how the equation is factored. Files: * quad3.83g(quad3.83p, zbinf.83p, zbinfi2.83p) * readme.txt **Note: zbinf and zbinfi2 are modified versions of Bryan Rabeler's zbf and zbfi2 in his program called Binomial Factor. (brabeler@ticalc.org) **************************************************** Manual: Open quad3. An Opening Screen will appear. Press enter, and you'll be prompted for what the coefficients A, B, and C equal. The values for X will be displayed in a fraction (if possible) or a decimal. It will also read i (square root of a negative number). Then at the top the quadratic formula is factored, if possible. Press enter and you will be asked if you want to see the graph. If you do you will see the graph and the equation is displayed in the upper left hand corner of the graph. Press enter and it will ask if you want to do it again. If no, then it will go to the closing screen. Press enter and a new screen will appear. Example #1: Example #2: A= 18 A= 7 B= 9 B= 5 C= -5 C= 16 (6X+5)=0 -NOT FACTORABLE- (3X-1)=0 X= X= 1/3 -5/14+1.4690688i -5/6 -5/14-1.1690688i Example #3: A= 1 B= 4 C= 13 (X+2-3i)=0 (X-2+3i)=0 X= -2+3i -2-3i History: v2.5 -- Made it AShell83 Compatible v2.0 -- Added the binomial factoring and linear function v1.0 -- Original release There should not be any bugs, but if there are, please feel free to email me.