Reciprocal key - Texas Instruments TI-84 Plus Calculator

Use the key x-1.
Example: reciprocal of 5: Press 5, then key x-1, then =

To calculate the inverse of a number one does as follows.
Non-scientific calculator: enter 1/ number the =
Scientific calculator: use the reciprocal key marked [x^-1] or [1/x]
The key, if it exists may be accessed directly (by pressing it), or after pressing the [SHIFT], [2nd ] or [2ndF] key. For the reciprocal key the number must already appear in the display screen.

Enter the number and press the = sign.
With the number displayed, press the power key (marked as [X^y], [Y^x] or [^]) followed by exponent -1.
OR while the number is stored in Ans memory, enter 1 / Ans.
Some calculators have a special key for the reciprocal. It is marked as [x^-1]. By pressing the reciprocal key while number is displayed, you calculate its reciprocal.

Use the 1/x key or the general power key x^-1.
By hand 0.6=3/5
The reciprocal of 3/5 is 5/3

It's the second function of the "2" key, marked "x-superscript-negative-one".

If you mean "1-over-x" then it's the key marked "x-superscript-negative-one" just right and below the big round cursor pad. If you mean "reciprocal sign" more commonly referred to as "negative" or "change-sign" then it's the key marked "(-)" two keys above the "7" key.

The reciprocal key (1/X) is the key labelled as X to the power minus one: X^-1
or:
____
' -1 '
'X '

There is a key on the left column of keys, below the MATH key and above the x^2 key. It is marked with an x raised to power of -1.
It computes the reciprocal of the number displayed.

sec 23

It does. For instance, to get the reciprocal of 4, enter the following sequence: 4 [1/x] (this last key to be found third row down, second black key in). The decimal 0.25 will appear as the result. Convert this, if you want, to the fraction 1/4 by pressing the yellow function key [2nd], then {F<>D] located bottom, far left. Hope that's what you wanted!