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This is a video from EveryStepCalculus.com
demonstrating how my programs work on a TI-89
Titanium calculator and other calculators in the TI system
for physics and calculus problems
okay partial fractions
Uh, to get started on my programs you have to press
2nd Alpha to put in i_n_d_e_x in here then press
Alpha to put the 9 in open and close parentheses press enter and your into my menu
I'm already at partial fractions you see there's a menu here, all alphabetical that
you can scroll down to
up to we want partial fractions right now
you have to press Alpha before you put in anything into these entry lines here
remember to press Alpha
and put in the function 1
divided by
the quantity x
squared
plus 2 times
x, I've already showed you what you've entered so you can change it if you want
I say it's okay
first of all we factor the denominator it's already factored here
and we choose our A&B
and b would be x
and x plus 2, equals 1
and then we multiply by the
common denominator which I showed you in the previews one you get x, or a times
x plus 2
plus b times x
trying to eliminate one parameters one
variable a in this case so
we multiply by a -2 or I mean
add by a -2 we'll get a zero
so we choose that one
and then we figure out what b is, and then we can use that
to figure out what a is
and here's a and your three halves, here's your partial thing for your answer
for your calculus test pretty neat huh?
EveryStepCalculus.com goto my site buy my programs and pass calculus