Texas Instruments TI-89 Titanium User Manual page 896

Error
Number Description
690 Missing )
700 Missing "
710 Missing ]
720 Missing }
730 Missing start or end of block syntax
740 Missing Then in the If..EndIf block
750 Name is not a function or program
765 No functions selected
780 No solution found
Using the interactive math features (F5:Math) in the Graph application can give this
error. For example, if you attempt to find an inflection point of the parabola
y1(x)=xñ , which does not exist, this error will be displayed.
790 Non-algebraic variable in expression
If a is the name of a PIC, GDB, MAC, FIG, etc., a+1 is invalid. Use a different
variable name in the expression or delete the variable.
800 Non-real result
For example, if the unit is in the REAL setting of the Complex Format mode, ln(ë 2)
is invalid.
810 Not enough memory to save current variable. Please delete unneeded variables on
the Var-Link screen and re-open editor as current OR re-open editor and use F1 8 to
clear editor.
This error message is caused by very low memory conditions inside the
Data/Matrix Editor.
830 Overflow
840 Plot setup
Appendix B: Technical Reference 893