Error messages

15.1What each message means#

An error is shown in a box with the words "Press any key to continue". Press any key and you return to your entry, unchanged, so you can fix it.

Message	What it means	How to fix
Error: Syntax error	The entry is not a valid expression: a misplaced operator, a missing bracket or an empty box.	Check brackets and operators; use the negative key (−) for negative numbers.
Error: Domain error	A function was given a value it cannot take, or the arithmetic failed.	Check the inputs, for example invNorm needs an area between 0 and 1.
Error: Division by zero	A division by zero that cannot be expressed as undef.	Change the divisor.
Error: Overflow	The number is too large to hold.	Use smaller numbers.
Error: Dimension error	Matrix sizes do not fit the operation (or a matrix is not rectangular).	Check the number of rows and columns; determinants need a square matrix.
Error: Dimension mismatch	Two lists or matrices have different sizes.	Make them the same length.
Error: Singular matrix	The matrix has no inverse (its determinant is 0).	Use a different matrix, or solve with rref.
Error: Non-real result	The answer is not a real number in Real mode, such as √(−4) or ln(−1).	Switch to Rectangular in Settings, or use the complex functions.
Error: Argument error	A function got the wrong kind or number of arguments.	Look up the function in the catalog and fix the arguments.
Error: Too few arguments	A function needs more values than you gave.	Add the missing arguments.
Error: Too many arguments	A function was given more values than it takes, such as sin(5,5).	Remove the extra arguments.
Error: Data type	A value is the wrong type, for example a number where a matrix is needed.	Give the type the function expects.
Error: Invalid index	An item position is outside the list or matrix.	Use a valid position.
Error: Reserved name	You tried to store a value in a name the calculator uses.	Choose another variable name.
Error: No solution found	nSolve or a solver found no answer.	Try another guess, or graph the function.
Error: Infinitely many zeros	The expression is zero everywhere.	This is not a single set of zeros; check the expression.
Error: Too complex	The calculation is too large to carry out.	Break the problem into smaller steps.
Error: Invalid window	On the graph, the minimum is not below the maximum.	Enter a smaller minimum than maximum.

15.2Results that are not errors#

Example 15.1

Division by zero gives undef

1. Type 1/0.

   1÷0enter

Example 15.2

Overflow gives infinity

1. Type 2^100000.

   2^100000enter

Example 15.3

Log of zero

1. Type ln(0).

   ln(0)enter

TI-Nspire CX CAS is a trademark of Texas Instruments Incorporated. Trident Calculator is an independent product by South View Studios and is not affiliated with, sponsored by or endorsed by Texas Instruments. The name is used only to describe the kind of calculator this model resembles; Trident's names, keys, display, fonts and software are its own clean-room design.