TI-84 Plus and Silver Edition Manual

172 Appendix B: General Information
INCREMENT
• The increment in seq( is 0 or has the wrong sign.
This error is not returned during graphing. The
TI-84 Plus allows for undefined values on a
graph.
• The increment in a For( loop is 0.
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 UnN1 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
(nN1) or (nN2).
• 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