fx-82MS      fx-82TL      fx-9860GII      TI-83

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X^-1

On a Casio calculator you can obtain the reciprocal of a number

X⁻¹

 

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Example 1

To calculate the reciprocal of 2 as 2⁻¹ = 0.5

					2⁻¹                   0.5
2	X⁻¹		=

or with a negative exponent as 2⁻¹ = 0.5

							2xy-1                0.5
2	Xy		(−)	1	=

or as the division 1 ÷ 2 = 0.5

					1÷2                 0.5
1	÷	2	=

or as the fraction 1 / 2 = 0.5

					1┘2                  1┘2.					1┘2                  0.5
1	ab/c	2	=					ab/c

 

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Example 2

To calculate  = 0.707107

						√2⁻¹                  0.707106781
√	2	X⁻¹		=

but you can also enter this as

								√2xy−1              0.707106781
√	2	Xy		(−)	1	=

and because  also as

							1÷√2                0.707106781
1	÷		√	2	=

 

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Example 3

To enter 0⁻¹

					Ma  ERROR
0	X⁻¹		=					AC/ON

Dividing by zero always produces a message.

 

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