this is a video from every step calculus dot
com
demonstrating how my programs work
on a t i eighty nine titanium calculator
and other calculators in the t i system
for physics and calculus problems
how to use my programs to derive the
quadratic formula
and let's get started
you press second alpha
to enter the i n d e x letters
in the entry line here
and then press alpha
to put the eight and the open
and closed parenthesis
press enter and you're into my menu
uhm you can scroll up like this
go to the bottom of the menu
or you can come from
from the top down
they're all alphebetical
and so we're going to go to
the quadratic formula here
and there it is quadratic formula
I give you a little definition of it
you write this down on your paper
right away
or test
the ah formula for it
and you enter the variables
let's enter
ahh you have to push alpha
before you enter anything into these
entry lines of my programs
so we're going to put alpha
minus fifteen
and alpha six
and alpha eight
I always show you what you enter
so you can change it
in case you've made a mistake
I say it's ok
we're going to do the quick answer here
and notice that we put the variables
in the actual formula here
you write this right on your paper here
just as you're doing the problem
and I come up with the answer
this is the exact answer
and this is the approximate answer
exact and approximate
for the two values of x
pretty neat huh
every step calculus dot com
go to my site
buy my programs
and pass calculus
