Calculator User Manual

Appendix B: Reference Information 655
VARIABLE You have tried to archive a variable that cannot be
archived or you have tried to unarchive an application
or group.
Examples of variables that cannot be archived include:
• Real numbers LRESID, R, T, X, Y, Theta, Statistic
variables under
Vars, STATISTICS menu, Yvars,
and the
AppIdList.
VERSION You have attempted to receive an incompatible variable
version from another graphing calculator.
WINDOW
RANGE
A problem exists with the window variables.
• You defined Xmax  Xmin or Ymax  Ymin.
• You defined
qmax qmin and qstep > 0 (or vice
versa).
• You attempted to define
Tstep=0.
• You defined
Tmax  Tmin and Tstep > 0 (or vice
versa).
• Window variables are too small or too large to graph
correctly. You may have attempted to zoom in or zoom
out to a point that exceeds the TI-84 Plus’s numerical
range.
ZOOM • A point or a line, instead of a box, is defined in ZBox.
•A ZOOM operation returned a math error.
Error Type Possible Causes and Suggested Remedies