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

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x^-1

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

x⁻¹

or via the catalog as

	CATALOG⎵
2nd		0		►⁻¹		ENTER

 

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Example 1

To calculate 2⁻¹ = 0.5

2	x⁻¹		ENTER		2⁻¹
					.5

or as the negative exponent

2	∧		(–)	1	ENTER		2^-1
							.5

or as the division

1	÷	2	ENTER		1/2
					.5

 

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Example 2

To calculate  = 0.7071…

		√         I
2nd		x²	2	)		x⁻¹		ENTER		√(2)⁻¹
										.7071067812

or as

√         I

2nd

x²

2

)

∧

(–)

1

ENTER

√(2)^-1

.7071067812

and because  also as

					√         I
1	÷		SHIFT		x²	2	ENTER		1/√(2
									.7071067812

 

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Example 3

To enter 0⁻¹

					ERR:DIVIDE BY 0 1:Quit 2:Goto
0	x⁻¹		ENTER				CLEAR

Dividing by zero always produces a message.

 

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