fx-82MS fx-82TL fx-9860GII TI-83
x-1
On a Casio calculator you can obtain the reciprocal of a number
x⁻¹ J
SHIFT )
or via the catalog as
CATALOG INPUT SHIFT 4 ⁻¹ F1
Example 1
To calculate 2−1 = 0.5
x⁻¹ 2-1 2 SHIFT ) EXE 0.5
or as the negative exponent
2-1 2 ∧ (–) 1 EXE 0.5
or as the division
1 ÷ 2 EXE 1÷2 0.5
or as the fraction 1 / 2 = 0.5
0.5 1 ab/c 2 EXE F↔D
Example 2
To calculate = 0.7071…
x⁻¹ √ √2-1 √2-1 SHIFT ) SHIFT x² 2 EXE F↔D 0.7071067812
or as
√ √2-1 SHIFT x² 2 ▷ ∧ (–) 1 EXE
and because also as
√ 1 ÷ SHIFT x² 2 EXE 1÷√2
Example 3
To enter 0−1
x⁻¹
Ma ERROR Press:[EXIT] 0 SHIFT ) AC/ON 0-1
Dividing by zero always produces a message.