### Partial Fractions Decomposition 4 on TI-89: Raw Transcript

This is a video from EveryStepCalculus.com

demonstrating how my programs work on a TI 89

Titanium calculator and other calculators in a TI system

for physics and calculus problems

okay

partial fraction decomposition all my programs work on that

Many people have asked for that so I programmed it.

Um, to get to my menu you have two press second Alpha to put I_N_D_E_X

This is a calculus two and three Series

and then you have to press Alpha again to put the 9 in the open and close

parentheses and press Enter and then your into my menu.

I’m already at partial fractions here all are alphabetical you scroll down

to it, choose that

press Enter give an example with what it should look like when you enter it

have to press Alpha before you enter anything in these empty lines here

going to go Alpha for quantity you have to use parenthesis now

We’re doing quantities in numerators and quantities in

denominators so

the quantity X squared

plus 8 divided by

quantity X

squared

minus 5 times

X plus

six

now you want to do this without from memory without my programs

be my guest I always show you what you’ve entered, so you can change in case you

made a mistake

I say it’s okay and the first thing you do is

is factor the denominator which is this

You write this on your paper exactly as you see it and so the numerator

is equal to these but put the a

and b partial fractions in you multiply it

times the common denominator actually this is on the other side to x squared

plus eight over this amount but when you multiply it out it cancels

and x squared plus 8 equals

a times X minus 2 plus b X minus 3

you choose a number that will cancel the

one of them, so you can solve it and you choose 2

so you got your, these in quotation marks are

entered for the x’s

x squared plus 8 here’s 2 minus 2 etcetera you write that on your paper, I show you what the answer is

and you work it out and you come up with b minus 12

and you write down on your paper that x equals three

Mark that into the equation and it equals this

and then you work out the

computations in a equals 17 so the

partial fractions 17 over x-3 plus

-12 or x-2 pretty neat huh, every step calculus dot com go to my site by my

programs and pass calculus

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