fx-82TL fx-9860GII TI-83
Error messages
On a Casio calculator you can get error messages.
Example 1
To enter 1 ÷ 0
Ma ERROR
1 ÷ 0 =
or 0 ÷ 0
Ma ERROR
0 ÷ 0 =
or 0−1
Ma ERROR
0 X⁻¹ =
Dividing by zero always produces a message.
Example 2
To enter 00
Ma ERROR
0 Xy 0 =
although it is determined by definition that 00 ≝ 1. Take that as a warning.
Example 3
To enter √−2
Ma ERROR
√ (−) 2 =
The square root from a negative number always gives a message.
Example 4
To enter 2 (−) 1
2-1_
0.Syn ERROR
2 (−) 1 =
A negative sign cannot be used to perform a subtraction.