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

 

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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

 

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Example 3

To enter 0⁻¹

0	x⁻¹		=		Math ERROR			AC

Dividing by zero always produces a message.

 

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