Texas Instruments TI-89 Titanium User Manual page 772

expression1,var
cFactor(
with respect to variable
expression1
factors that are linear in
constants, even if it introduces irrational constants
or subexpressions that are irrational in other
variables.
The factors and their terms are sorted with
the main variable. Similar powers of
collected in each factor. Include
needed with respect to only that variable and you
are willing to accept irrational expressions in any
other variables to increase factorization with respect
to . There might be some incidental factoring with
var
respect to other variables.
For the
AUTO
including
floating-point coefficients where irrational
coefficients cannot be explicitly expressed concisely
in terms of the built-in functions. Even when there is
only one variable, including
complete factorization.
Note: See also
char()
MATH/String menu
) ⇒
integer
char(
Returns a character string containing the character
numbered
TI-89 Titanium/Voyage™ 200 character set. See
Appendix B for a complete listing of character
codes. The valid range for
checkTmr()
CATALOG
starttime
checkTmr(
Returns an integer representing the number of
seconds that have elapsed since a timer was
started.
starttime
startTmr()
You can also use a list or matrix of
Valid
starttime
current time of the clock. You can run multiple
timers simultaneously.
Note: See also
Circle
CATALOG
Circle x , y , r [, drawMode
Draws a circle with its center at window coordinates
( , ) and with a radius of
x y
, , and
x y r
If
drawMode
If
drawMode
If
drawMode
Note: Regraphing erases all drawn items. See also
.
PxlCrcl
ClockOff
CATALOG
ClockOff
Turns the clock
Appendix A: Functions and Instructions
returns
expression1
)
.
var
is factored as much as possible toward
, with perhaps non-real
var
var
if factorization is
var
setting of the
Exact/Approx
also permits approximation with
var
might yield more
var
.
factor()
character
from the
integer
is 0–255.
integer
) ⇒
integer
is an integer returned from the
function.
starttime
integers must fall between 0 and the
and
startTmr() timeCnv()
]
.
r
must be real values.
= 1, draws the circle (default).
= 0, turns off the circle.
= -1, inverts pixels along the circle.
.
OFF
factored
cFactor(a^3ùx^2+aùx^2+a^3+a,x)
¸
cFactor(x^2+3,x) ¸
cFactor(x^2+a,x) ¸
as
var
are
mode,
cFactor(x^5+4x^4+5x^3ì6xì3)
¸
cFactor(ans(1),x) ¸
(x ì.965)ø(x +.612)ø(x + 2.13)ø
char(38) ¸
char(65) ¸
startTmr()
checkTmr(148083315)
startTmr()!Timer1
©
startTmr()!Timer2
integers.
©
checkTmr(Timer1)!Timer1Value
©
.
checkTmr(Timer2)!Timer2Value
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