Texas Instruments TI-89 Titanium User Manual page 832

propFrac()
MATH/Algebra menu
expression1
propFrac(
propFrac(
the sum of an integer and a fraction having the
same sign and a greater denominator magnitude
than numerator magnitude.
propFrac(
proper ratios and a polynomial with respect to
The degree of
degree of
Similar powers of
their factors are sorted with
If is omitted, a proper fraction expansion is done
var
with respect to the most main variable. The
coefficients of the polynomial part are then made
proper with respect to their most main variable first
and so on.
For rational expressions,
less extreme alternative to
PtChg
CATALOG
x y
PtChg ,
PtChg xList , yList
Displays the Graph screen and reverses the screen
pixel nearest to window coordinates
( , ).
x y
PtOff
CATALOG
PtOff x , y
xList yList
PtOff ,
Displays the Graph screen and turns off the screen
pixel nearest to window coordinates
( , ).
x y
PtOn
CATALOG
x y
PtOn ,
xList yList
PtOn ,
Displays the Graph screen and turns on the screen
pixel nearest to window coordinates
( , ).
x y
ptTest()
CATALOG
) ⇒
x y
ptTest ( ,
xList yList
ptTest ( ,
Returns
true
pixel nearest to window coordinates (
Appendix A: Functions and Instructions
]) ⇒
var expression
[,
returns
rational_number rational_number
)
returns the sum of
rational_expression,var
)
in the denominator exceeds the
var
in the numerator in each proper ratio.
var
are collected. The terms and
var
as the main variable.
var
is a faster but
propFrac()
.
expand()
Boolean constant expression
) ⇒
Boolean constant expression
or . Returns only if the screen
false true
x
propFrac(4/3) ¸
as
propFrac(ë 4/3) ¸
propFrac((x^2+x+1)/(x+1)+
.
var
(y^2+y+1)/(y+1),x) ¸
propFrac(ans(1))
Note:
PtChg
similar examples.
PtChg 2,4 ¸
PtOff 2,4 ¸
PtOn 3,5 ¸
ptTest(3,5) ¸
, ) is on.
y
1 + 1/3
ë 1ì 1/3
through show continuing
PtText
true
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