Texas Instruments TI-89, TI-92

444 Appendix A: Functions and Instructions

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 444 of 132

Exec CATALOG

Exec string [, expression1] [, expression2] ...

Executes a string consisting of a series of

Motorola 68000 op-codes. These codes act as a

form of an assembly-language program. If

needed, the optional expressions let you pass

one or more arguments to the program.

For more information, check the TI Web site:

education.ti.com

Warning: Exec gives you access to the full

power of the microprocessor. Please be

aware that you can easily make a mistake

that locks up the calculator and causes you

to lose your data. We suggest you make a

backup of the calculator contents before

attempting to use the Exec command.

Exit CATALOG

Exit

Exits the current For, While, or Loop block.

Exit is not allowed outside the three looping

structures (For, While, or Loop).

Program listing:

:0!temp

:For i,

00,

: temp+i!temp

: If temp>20

: Exit

:En

For

:Disp temp

Contents of temp after execution: 21

exp4list() CATALOG

exp4list(expression,var) ⇒ list

Examines expression for equations that are

separated by the word “or,” and returns a list

containing the right-hand sides of the

equations of the form var=expression. This

gives you an easy way to extract some

solution values embedded in the results of

the solve(), cSolve(), fMin(), and fMax()

functions.

Note: exp4list() is not necessary with the

zeros and cZeros() functions because they

return a list of solution values directly.

solve(x^2ìxì2=0,x) ¸x=2 or

x=ë

exp4list(solve(x^2ìxì2=0,x),x)

{ë1 2}