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Errors and Messages

When the calculator detects an error, the screen will display the error type or a message.

• To correct an error: Press - to clear the error screen. The cursor will display at or near the error. Correct the expression.
• To close the error screen without correcting the expression: Press % s to return to the home screen.

The following list includes some of the errors and messages that you may encounter.

Error/Message

Description

Argument

This error is returned when:

• a function does not have the correct number of arguments
• the lower limit is greater than upper limit in summation or product function

Bad Guess

This error is returned when the variable entry for the "solve for" variable in Numeric Solver is outside the lower and upper bounds entered.

Bounds:

Enter

LOWER { UPPER

This error is returned when input for lower bound > upper bound for:

• Normalcdf distribution
• Numeric Solver solution bounds

Break

This error is returned when the & key is pressed to stop the evaluation of an expression.

Calculate

1-Var,2-Var Stat

or a regression.

This message is returned when no statistics or regression calculation has been stored.

Change mode

to DEC.

This error is returned when the mode is set to BIN, HEX or OCT and the following apps are accessed:

‡ I – u v

‰ Š ‹ t [vector]

These apps are available in DEC mode only.

Dimension

mismatch

This error is returned if the dimensions of a matrix or vector in a calculation are not correct for the operation.

Division

by 0

This error is returned if the expression evaluation contains division by 0.

Domain

This error is returned when an argument is not in the function domain. For example:

• For x‡y:

x = 0

– or –

y < 0 and x is not an odd integer.

• For yx: y and x = 0.
• For ‡x: x < 0.
• For log, ln or logBASE: x { 0.
• For tan: x = 90¡, -90¡, 270¡, -270¡, 450¡, etc., and equivalent for radian mode.
• For sin-1 or cos-1: |x| > 1.
• For nCr or nPr: n or r are not integers | 0.
• For x!: x is not an integer between 0 and 69.

Enter 0{area{1

This error is returned when you enter an invalid area value in invNormal for a distribution.

Enter sigma>0

This error is returned when the input for sigma in a distribution is invalid.

Expression

is too long

This error is returned when an entry exceeds the digit limits. For example, pasting an expression entry with a constant that exceeds the limit.

A chequerboard cursor may display when limits are reached in each MathPrint™ feature.

Formula

This error is returned in v when:

• the formula does not contain a list name (L1, L2, or L3)
• the formula for a list contains its own list name

For example, a formula for L1 contains L1.

Frequency:

Enter FREQ|0

This error is returned when at least one element in a list selected for FREQ is a negative real number in 1-VAR or 2-VAR STATS.

Highest degree

coefficient

cannot be zero.

This error is returned when the coefficient, a, in the polynomial solver calculation is pre-populated with zero, or if the input to a is zero. Change to a non-zero value.

Input must be

non-negative

Integer.

This error is returned when an input is not the expected number type. For example, in distribution arguments TRIALS and x in Binomialpdf.

Input

must be Real

This error is returned when an input requires a real number.

Invalid

data type

This error is returned when the argument of a command or function is the incorrect data type.

For example, the error will be displayed for sin(i) or min(i,7) where the arguments must be Real numbers.

Invalid Dimension

This error is returned when a matrix or vector operation cannot be performed due to incorrect dimensions.

Invalid

equation

This error is returned when an invalid equation is entered such as 1000=10000 or a blank equation in the numeric solver.

Invalid

Function

This error is returned when no function is defined and a function evaluation is attempted. Define functions in I.

List Dimension

1{dim(list){50

This error is returned when, in v:

• the SUM LIST function is executed on an empty list
• a sequence is created with a length of 0 or >50.

Max iterations

reached.

Try new guess.

This error is returned when the numeric equation solver has exceeded the maximum number of permitted iterations for finding a solution. Change the initial guess for the solution variable or check the equation.

Mean:

Enter mu>0

This error is returned when an invalid value is input for the mean (mean = mu) in poissonpdf or poissoncdf.

Memory limit

reached

This error is returned when a calculation contains a circular reference such as two functions referencing each other, or a very long calculation.

No sign change

found.

Try new guess.

This error is returned when the numeric solver algorithm cannot find a solution. Change the initial guess for the solution variable or check the equation.

Repeated roots equations, such as x^2=0, do not have a sign change around the root which is essential for the numeric solver algorithm to iterate to a solution.

[2nd] [set op]:

Operation

is not defined.

This error is returned when an operation has not been defined in % n and % m is pressed.

Operation set!

[2nd] [op] pastes

to Home Screen.

This message is returned when an operation is stored (set) from % n editor. Press any key to continue.

Overflow

This error is returned when a calculation or value is beyond the range of the calculator.

Probability:

Enter 0{p{1

This error is returned when input for the probability in distributions is invalid.

Singular

matrix

This error is returned when the inverse of a singular matrix is attempted. A singular matrix has determinant = 0.

Singularity

This error is returned when the numeric solver algorithm cannot return a solution due to a point at which the function is not defined.

Statistics

This error is returned when a statistical or regression function is invalid.

For example, when a calculation of 1-var or 2-var stats is attempted with no defined data points.

Step size must

not be 0.

This error is returned when, in v, the STEP SIZE input is set to 0 in the SEQUENCE FILL function.

Syntax

This error is returned when an expression contains misplaced functions, arguments, parentheses, or commas.

Tolerance

not met

This error is returned when the tolerance argument, such as in numeric differentiation or numeric integration, is such that the algorithm cannot return an accurate result.

TRIALS:

Enter 0{n{49

This error is returned in Binomialpdf and Binomialcdf, when the number of trials is out of range, 0{n{49 in the case of ALL.

Undefined

This error is returned when a matrix or a vector is not defined. Define the matrix or vector in the t or [vector] EDIT menu.