Keep in mind that my original Formulas program was in written in TI82 format as you use this. I would suggest testing it before you use it because I dont know as much about the TI83+ as I do about the 82. Other than that here is the readme for my programs: This is a fairly simple program containing various formulas created in a few hours of boredom in Algebra II one day. It contains the distance formula, a slope finder, a unique program which finds how many zeros (rational and non) a 2nd, 3rd, 4th, or 5th degree equation (ie: 3x^5-5x^4+10x^3+5x^2+3x-2=0) contains, the quadratic formula (Which CAN handle imaginary numbers thanks to a fellow programer whos name I dont know), and a few geometric formulas i knew off the top of my head. The log program has formulas for logarithms and an interest formula (you enter principle, rate and time and it gives you ending amount of money). I dont care as much as most people about plagierism, however just ask me if you can use some of my programs in your own program or whatever else you want...I can almost promise you I'll say yes. I just thought I'd give everyone else a chance to use these programs (which have proved very useful on End Of Course exams and finals) BTW: The "formulas" program and the "Log" program are totally seperate. If you feel that you dont need one of them go ahead and delete the other, it wont affect the first one. Enjoy! QUESTIONS OR COMMENTS: Scott Kelly zurk12@hotmail.com