Texas Instruments -84 Plus, Manual Book

Page: 650 / 696

Appendix B: Reference Information 647
BAD GUESS
• In a
CALC
operation, you specified a
Guess
that is
not between Left Bound and Right Bound .
• For the
solve(
function or the equation solver, you
specified a guess that is not between lower and upper .
• Your guess and several points around it are
undefined.
Examine a graph of the function. If the equation has a
solution, change the bounds and/or the initial guess.
BOUND
• In a
CALC
operation or with
Select(
, you defined
Left Bound > Right Bound .
• In
fMin(
,
fMax(
,
solve(
, or the equation solver, you
entered lower
‚
upper .
BREAK
You pressed the
É
key to break execution of a
program, to halt a DRAW instruction, or to stop
evaluation of an expression.
DATA TYPE You entered a value or variable that is the wrong
data type.
• For a function (including implied multiplication) or an
instruction, you entered an argument that is an invalid
data type, such as a complex number where a real
number is required. See Appendix A and the
appropriate chapter.
• In an editor, you entered a type that is not allowed,
such as a matrix entered as an element in the stat list
editor. See the appropriate chapter.
• You attempted to store an incorrect data type, such as
a matrix, to a list.
Error Type Possible Causes and Suggested Remedies