Raw Transcript

Raw Transcript

This is a video from everystepcalculus.com demonstrating how my programs work on a TI89 Titanium Calculator and other calculators in the TI system for physics and calculus problems. I’m going to show how my programs do a quadratic formula proof and let’s get started you have to press second alpha to put the i n d e x in here you press alpha to put the eight and the open and closed parentheses press enter and you’re into my menu you have many choices here so you can pass calculus and do your homework we’re going to scroll down to the q section here and see if we can’t find quadratic formula do the calculations on a quadratic formula proof I give you always a little definition of it so you know what you’re talking about with the quadratic formula and why you write this formula down on your paper or homework right away and you enter your variables you have to press alpha before you enter anything into my entry lines of my programs remember that so we’re going to do alpha minus six alpha minus five and alpha nine. I always show you what you’ve entered in case you made a mistake and we’re going to do the quick answer here well on the proof will do the full answer ah you enter the variables and write this on your paper here they’re entered into the formula and then you do the calculations just like you would if you were doing the calculations yourself write everything down you see go through each screen and you got the exact answer here the approximate answer exact answer and approximate answer for x pretty neat huh. EveryStepCalculus.com go to my site buy my programs and pass calculus.

Raw Transcript

Transcript

Ok, this video is on the Quadratic formula, lets get started. Again we press
second and then alpha to enter letters and then my menu. Code is I n d e x
and then alpha eight and then closed parenthesis, then press enter. From here
you – You can scroll up if you want to go to the bottom of the menu – they are
all alphabetical – the menu items. And there we have the quadratic formula
there. First of all, I give you a little information on what it is, and why we use it.
Then I give you the formula, which you write on your paper – the first thing you
do, and now we’re going to add a, b, c of the variables. So let’s do alpha minus
sixteen, press the enter twice, and then you have to go alpha maybe seven, and
then alpha let’s try three. Shows what you entered so you can change it if you
want. I say it’s ok. And then after that, if you want the quick answer you scroll
to this one or press the number in front, one or two, or step by step. Let’s do
the quick answer right now, I’ll press one, shows what you write on your paper
there as you’re adding the variables, and then this is the exact answer and this is
the approximate answer. Exact answer for x, a minus point two six six and point
seven o four. Press enter and you can go back to the main menu, or you can
quit, or you can do a new quad problem. Let’s do another, ahh, let’s go alpha
minus eight , and nine, and alpha two. Now you’ll notice this didn’t get nine so
we need to change it. So I’ll press number two and go back and enter it again.
Let’s go alpha minus eight, alpha nine, and alpha seven, that’s better, say it’s
ok. I want the step by step answer this time, so we go through it and you write
everything you see on your paper here. And you can see here is the exact again
and here is the approximate answer for one x, and here is – you are doing minus
or plus ya know on this part of the discriminate, and here is the exact answer or
the approximate answer. Pretty neat huh? Everystepcalculus.com. Enjoy my
programs.