Texas Instruments TI-84 - Manual (Page 653)

Appendix B: Reference Information 650
INVALID • You attempted to reference a variable or use a
function where it is not valid. For example,
Yn cannot
reference Y , Xmin ,
@ X , or TblStart .
• You attempted to reference a variable or function that
was transferred from the TI
.82 and is not valid for the
TI-84 Plus For example, you may have transferred
Un
N
1 to the TI-84 Plus from the TI .82 and then tried
to reference it.
• In Seq mode, you attempted to graph a phase plot
without defining both equations of the phase plot.
• In Seq mode, you attempted to graph a recursive
sequence without having input the correct number of
initial conditions.
• In Seq mode, you attempted to reference terms other
than (n
N
1) or (n
N
2) .
• You attempted to designate a graph style that is
invalid within the current graph mode.
• You attempted to use Select( without having selected
(turned on) at least one xyLine or scatter plot.
INVALID DIM • The ERR:INVALID DIM error message may occur if
you are trying to graph a function that does not involve
the stat plot features. The error can be corrected by
turning off the stat plots. To turn the stat plots off,
press
y ,
and then select 4:PlotsOff .
• You specified a list dimension as something other
than an integer between 1 and 999.
• You specified a matrix dimension as something other
than an integer between 1 and 99.
• You attempted to invert a matrix that is not square.
Error Type Possible Causes and Suggested Remedies