Appendix A: Functions and Instructions 451
8992APPA.DOC TI-89 / TI-92 Plus: Appendix A (US English) Susan Gullord Revised: 02/23/01 1:48 PM Printed: 02/23/01 2:21 PM Page 451 of 132
fpart() MATH/Number menu
fpart(expression1) ⇒ expression
fpart(list1) ⇒ list
fpart(matrix1) ⇒ matrix
Returns the fractional part of the argument.
For a list or matrix, returns the fractional
parts of the elements.
The argument can be a real or a complex
number.
fpart(ë1.234) ¸ë.234
fpart({1, ë2.3, 7.003}) ¸
{
0 ë.3 .003
}
Func CATALOG
Func
block
EndFunc
Required as the first statement in a multi-
statement function definition.
block can be either a single statement or a
series of statements separated with the “:”
character.
Note: when() also can be used to define and
graph piecewise-defined functions.
In function graphing mode, define a
piecewise function:
Define g(x)=Func:If x<0 Then
:Return 3ùcos
(
x
)
:E
l
se:Return
3ìx:En
d
If:En
d
Func
¸
Done
Graph g(x) ¸
gcd() MATH/Number menu
gcd(number1, number2) ⇒ expression
Returns the greatest common divisor of the
two arguments. The gcd of two fractions is
the gcd of their numerators divided by the
lcm of their denominators.
In Auto or Approximate mode, the gcd of
fractional floating-point numbers is 1.0.
gcd(18,33) ¸3
gcd(list1, list2) ⇒ list
Returns the greatest common divisors of the
corresponding elements in list1 and list2.
gcd({12,14,16},{9,7,5}) ¸
{3 7 1}
gcd(matrix1, matrix2) ⇒ matrix
Returns the greatest common divisors of the
corresponding elements in matrix1 and
matrix2.
gcd([2,4;6,8],[4,8;12,16]) ¸
[2 4
6 8]
Get CATALOG
Get var
Retrieves a CBL 2é/CBL™ (Calculator-Based
Laboratoryé) or CBRé (Calculator-Based
Rangeré) value from the link port and stores
it in variable var.
Program segment:
©
:Sen
d
{
3,
1
,ë
1
,0
}
:For i,
1
,99
: Get
d
ata
[
i
]
: PtOn i,
d
ata
[
i
]
:En
d
For
©