Casio fx-115ES - Manual (Page 49)

E-47
• Precision is basically the same as that described under “Calculation Range and
Precision”, above.
• ^( xy ),
x
' y , 3 ', x !, n P r , n C r type functions require consecutive internal
calculation, which can cause accumulation of errors that occur with each
calculation.
• Error is cumulative and tends to be large in the vicinity of a function’s singular
point and inflection point.
k Error Messages
The calculator will display an error message when a result exceeds the calculation
range, when you attempt an illegal input, or whenever any other similar problem
occurs.
When an error message appears...
The following are general operations you can use when any error message
appears.
• Pressing
d or e displays to the calculation expression editing screen you
were using before the error message appeared, with the cursor located at the
position of the error. For more information, see “Displaying the Location of an
Error”.
• Pressing A clears the calculation expression you input before the error message
appeared. You can then re-input and re-execute the calculation, if you want.
Note that in this case, the original calculation will not be retained in calculation
history memory.
Math ERROR
• Cause
• The intermediate or final result of the calculation you are performing exceeds
the allowable calculation range.
• Your input exceeds the allowable input range (particularly when using
functions).
• The calculation you are performing contains an illegal mathematical operation
(such as division by zero).
• Action
• Check the input values, reduce the number of digits, and try again.
• When using independent memory or a variable as the argument of a function,
make sure that the memory or variable value is within the allowable range for
the function.
Stack ERROR
• Cause
• The calculation you are performing has caused the capacity of the numeric
stack or the command stack to be exceeded.
• Action
• Simplify the calculation expression so it does not exceed the capacity of the
stack.
• Try splitting the calculation into two or more parts.
Syntax ERROR
• Cause
• There is a problem with the format of the calculation you are performing.
• Action
• Make necessary corrections.