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String entry, Subtraction – Texas Instruments TI-86 User Manual

Page 375

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Chapter 20: A to Z Function and Instruction Reference

363

20ATOZ.DOC TI-86, Chap 20, US English Bob Fedorisko Revised: 02/13/01 2:42 PM Printed: 02/13/01 3:05 PM Page 363 of 118

20ATOZ.DOC TI-86, Chap 20, US English Bob Fedorisko Revised: 02/13/01 2:42 PM Printed: 02/13/01 3:05 PM Page 363 of 118

String entry:

"

STRNG menu

‡ program editor

I/O menu

"

string

"

Defines a string. When you display a string, it is left-
justified on the screen.

Strings are interpreted as text characters, not numbers.
For example, you cannot perform a calculation with
strings such as "4" or "A¹8". To convert between string
variables and equation variables, use

Eq

4

St(

and

St

4

Eq(

as described on pages 290 and 361, respectively.

"Hello"¶STR b

Hello

Disp STR+", Jan" b

Hello, Jan

Done

sub(

STRNG menu

sub(

string

,

begin

,

length

)

Returns a new string that is a subset of string, starting
at character number begin and continuing for the
specified length.

"The answer is:"¶STR b

The answer is:

sub(STR,5,6) b

answer

Subtraction:

N

T

numberA

N

numberB

Returns the value of numberB subtracted from
numberA

. The arguments can be real or complex.

6

N

2 b

4

10

NL

4.5 b

14.5

list

N

number

Returns a list in which number is subtracted from each
element of list. The arguments can be real or complex.

{10,9,8}

N

4 b

{6 5 4}

In

RectC

complex number mode:

{8,1,(5,2)}

N

3 b

{(5,0) (

L

2,0) (2,2)}