Trident Help

RPN Power 48 manual · Chapter 18 of 19

Messages and errors

Every message the calculator can show, what it means and how to fix it.

18.1Error messages#

An error shows the command name followed by Error:, and the message below. The stack is put back as it was before the command, with the arguments restored. The message goes away when you press the next key.

MessageWhat it meansHow to fix it
Too Few ArgumentsThe command needs more objects than the stack holds.Push the missing objects first.
Bad Argument TypeAn object is of the wrong kind for the command (for example a string where a number is needed).Check with TYPE and convert.
Bad Argument ValueThe value is not allowed (for example a negative count).Use a valid value.
Undefined NameA name was recalled that holds no value.Store a value first.
Infinite ResultDivision by zero, or a singular matrix.Check the divisor or the matrix.
Undefined ResultThe result has no meaning, such as 0 divided by 0.Change the inputs.
Invalid DimensionArray sizes do not fit the operation.Check rows and columns.
Invalid SyntaxThe command line is not a valid object or program.Fix the line and press ENTER again.
No ArgumentLASTARG has no saved arguments yet.Run a command first.
OverflowThe result is too large.Use smaller numbers.
Insufficient MemoryPrograms are nested too deeply.Simplify the recursion.
InterruptedA program ran for too long and was stopped.Look for a loop that never ends.
Unable to IsolateISOL could not solve for the variable.Use SOLVE or rearrange.
Example 18.1

Too few arguments

  1. Press + with one number on the stack.

    5ENTER+
Result of the example "Too few arguments" The display shows: RAD { HOME } / + Error: / Too Few Arguments / 4: / 3: / 2: / 1: 5.
You should seeToo Few Arguments
Example 18.2

Division by zero

  1. Divide 5 by 0.

    5ENTER0÷
Result of the example "Division by zero" The display shows: RAD { HOME } / / Error: / Infinite Result / 4: / 3: / 2: 5 / 1: 0.
You should seeInfinite Result
Example 18.3

Zero divided by zero

  1. 0 over 0 has no meaning.

    0ENTER0÷
Result of the example "Zero divided by zero" The display shows: RAD { HOME } / / Error: / Undefined Result / 4: / 3: / 2: 0 / 1: 0.
You should seeUndefined Result
Example 18.4

Undefined name

  1. Recall a name that holds nothing.

    'αα◀ASINSINαENTER◀RCLSTO▶
Result of the example "Undefined name" The display shows: RAD { HOME } / RCL Error: / Undefined Name / 4: / 3: / 2: / 1: 'q'.
You should seeUndefined Name
Example 18.5

Wrong object type

  1. Multiply a string by a string.

    ▶" "7ααMODE◀F5◀PREVNXT◀PREVNXT◀SYMB'α▶7ENTER▶" "7ααMODE◀F5◀PREVNXT◀PREVNXT◀SYMB'α▶7ENTER×
Result of the example "Wrong object type" The display shows: RAD { HOME } / * Error: / Bad Argument Type / 4: / 3: / 2: "Hello" / 1: "Hello".
You should seeBad Argument Type
Example 18.6

Nothing to recall

  1. LASTARG with no earlier command.

    ▶LASTHIST
Result of the example "Nothing to recall" The display shows: RAD { HOME } / LASTARG Error: / No Argument / 4: / 3: / 2: / 1:.
You should seeNo Argument
Example 18.7

Invalid syntax

  1. An empty name is not valid.

    'ENTER
Result of the example "Invalid syntax" The display shows: RAD { HOME } / Error: / Invalid Syntax / 3: / 2: / 1: / ''.
You should seeInvalid Syntax
Example 18.8

Singular matrix

  1. Invert a matrix with zero determinant.

    ◀[ ]9◀[ ]91SPC2▶▶◀[ ]92SPC4ENTER◀MATRXVARF4
Result of the example "Singular matrix" The display shows: RAD { HOME } / INV Error: / Infinite Result / 4: / 3: / 2: / 1: [[ 1 2 ] [ 2 4 ]] / →ARRY ARRY→ DET INV TRN RREF .
You should seeInfinite Result

HP 48 and HP 50g is a trademark of HP Inc.. Trident Calculator is an independent product by South View Studios and is not affiliated with, sponsored by or endorsed by HP. 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.