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G (), 908 appendix a: functions and instructions – Texas Instruments TITANIUM TI-89 User Manual

Page 908

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908

Appendix A: Functions and Instructions

()

(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

Π

Π

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

Π

Π

Π

(

expression1

,

var

,

low

,

low

ì 1)

1

Π

(k,k,4,3)

¸

1

Π

Π

Π

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

G

G

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)

¸

nø (n + 1)ш (2ш n + 1)

6

G

(1/n^2,n,1,ˆ)

¸

6

G

G

G

G (

expression1

,

var

,

low

,

low

ì 1)

0

G

(k,k,4,3)

¸

0

G

G

G

G (

expression1

,

var

,

low

,

high

)

ë G

G

G

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 iù x

: StoPic #("pic" & string(i))

:EndFor

©