Texas Instruments Titanium TI-89, User Manual

Page: 894 / 977

Appendix B: Technical Reference 891
Error
Number
Description
400 Invalid assignment value
405 Invalid axes
410 Invalid command
420 Invalid folder name
430 Invalid for the current mode settings
440 Invalid implied multiply
For example, x(x+1) is invalid; whereas, x
ù
(x+1) is the correct syntax. This is to
avoid confusion between implied multiplication and function calls.
450 Invalid in a function or current expression
Only certain commands are valid in a user-defined function. Entries that are made
in the Window Editor, Table Editor, Data/Matrix Editor, and Solver as well as
system prompts such as Lower Bound cannot contain any commands or a colon
(:). See also “Creating and Evaluating User-Defined Functions” in the
Calculator
Home Screen module.
460 Invalid in Custom..EndCustm block
470 Invalid in Dialog..EndDlog block
480 Invalid in Toolbar..EndTBar block
490 Invalid in Try..EndTry block
500 Invalid label
Label names must follow the same rules used for naming variables.
510 Invalid list or matrix
For example, a list inside a list such as {2,{3,4}} is not valid.
520 Invalid outside Custom..EndCustm or ToolBar..EndTbar blocks
For example, an Item command is attempted outside a Custom or ToolBar
structure.
530 Invalid outside Dialog..EndDlog, Custom..EndCustm, or ToolBar..EndTBar blocks
For example, a Title command is attempted outside a Dialog , Custom , or ToolBar
structure.
540 Invalid outside Dialog..EndDlog block
For example, the DropDown command is attempted outside a Dialog structure.
550 Invalid outside function or program
A number of commands are not valid outside a program or a function. For example,
Local cannot be used unless it is in a program or function.