This is a video from everystepcalculus.com, demonstrating how my programs work on a TI 89 titanium calculator and other calculators and TI system for physics and calculus problems and let’s get started to enter my menu you have to press second alpha Index in here Press alpha put an 8 open/close parenthesis press enter in your and my menu scroll up we get closer they’re all alphabetical my menu and I’m gonna go up to the quadratic formula press ENTER I give you a definition of it how it works you write this on in your paper right away and we enter our variables you have to press alpha before you enter any thing in these entry lines here. I’ll go alpha minus 17 and alpha six and alpha 7. I show you what you’ve entered you can change it if you made a mistake on all my programs I do that I say it’s okay quickly answer. Here’s a variable’s entered into the formula which you wrote in your paper before and here’s the answers exact answer approximate exact answer and approximate for X pretty neat. everystepcalculus.com go to my site by my programs and pass calculus.