Appendix A: Functions and Instructions
881
‡
()
(square root)
2 ]
key
‡
(
expression1
)
⇒
expression
‡
(
list1
)
⇒
list
Returns the square root of the argument.
For a list, returns the square roots of all the
elements in
list1.
‡
(4)
¸
2
‡
({9,a,4})
¸
{3
‡
a 2}
Π
()
(product)
MATH/Calculus menu
Π
(
expression1
,
var
,
low
,
high
)
⇒
expression
Evaluates
expression1
for each value of
var
from
low
to
high
, and returns the product of the results.
Π
(1/n,n,1,5)
¸
1
120
Π
(k^2,k,1,n)
¸
(n
!
)
ñ
Π
({1/n,n,2},n,1,5)
¸
{
1
120
120 32
}
Π
(
expression1
,
var
,
low
,
low
ì
1
)
⇒
1
Π
(k,k,4,3)
¸
1
Π
(
expression1
,
var
,
low
,
high
)
⇒
1
/
Π
(
expression1,
var, high+1, low
ì
1)
if high < low
ì
1
Π
(1/k,k,4,1)
¸
6
Π
(1/k,k,4,1)
ù
Π
(1/k,k,2,4)
¸
1/4
G
()
(sum)
MATH/Calculus menu
G
(
expression1
,
var
,
low
,
high
)
⇒
expression
Evaluates
expression1
for each value of
var
from
low
to
high
, and returns the sum of the results.
G
(1/n,n,1,5)
¸
137
60
G
(k^2,k,1,n)
¸
n
ø
(n
+
1)
ø
(2
ø
n
+
1)
6
G
(1/n^2,n,1,
ˆ
)
¸
p
ñ
6
G
(
expression1
,
var
,
low
,
low
ì
1
)
⇒
0
G
(k,k,4,3)
¸
0
G
(
expression1
,
var
,
low
,
high
)
⇒
ë
G
(
expression1,
var, high+1, low
ì
1) if
high < low
ì
1
G
(k,k,4,1)
¸
ë
5
G
(k,k,4,1)+
G
(k,k,2,4)
¸
4
#
(indirection)
CATALOG
#
varNameString
Refers to the variable whose name is
varNameString
.
This lets you create and modify variables from a
program using strings.
Program segment:
©
:Request "Enter Your Name",str1
:NewFold #str1
©
©
:For i,1,5,1
: ClrGraph
: Graph i
ù
x
: StoPic #("pic" & string(i))
:EndFor
©
Summary of Contents for Titanium TI-89
Page 9: ...Getting Started 6 TI 89 Titanium keys Ë Ì Í Ê ...
Page 34: ...Getting Started 31 2 or D 2 B u s i n e s s D B D B Press Result ...
Page 43: ...Getting Started 40 3 0 D B D D B D Press Result ...
Page 44: ...Getting Started 41 D 2 0 0 2 D B Scroll down to October and press Press Result ...
Page 58: ...Getting Started 55 Example Set split screen mode to TOP BOTTOM Press Result 3 B D ...
Page 70: ...Getting Started 67 ...
Page 175: ...Operating the Calculator 172 From the Keyboard ...
Page 456: ...Tables 453 ...
Page 527: ...Data Matrix Editor 524 ...
