fx-82MS fx-82TL fx-9860GII TI-83
x-1
On a Casio calculator you can obtain the reciprocal of a number
x-1
Example 1
To calculate the reciprocal of 2 as 2−1 = 0.5
2 x-1 = 2-1
0.5
or with a negative exponent as 2−1 = 0.5
2 ^ − 1 = 2^−1
0.5
or as the division 1 ÷ 2 = 0.5
1 ÷ 2 = 1÷2
0.5
or as the fraction 1 / 2 = 0.5
1 a b/c 2 = 1┘2
1┘2.a b/c 1┘2
0.5
Example 2
To calculate = 0.707107
√ 2 x-1 = √2-1
0.707106781
but you can also enter this as
√ 2 ^ − 1 = √2^−1
0.707106781
and because also as
1 ÷ √ 2 = 1÷√2
0.707106781
Example 3
To enter 0−1
0 x-1 = Math ERROR
Dividing by zero always produces a message.