Reciprocal key where is reciprocal key on my calculator. sharp el520w

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

Instead of dividing, multiply by the reciprocal. Use the 1/x or x^-1 key.
But you can also buy a new calculator.

(1/10)^2=0.01
To calculate the inverse just invert the fraction 1/10 becomes 10 and you calculate 10^2=100 =1/0.01.
On the Sharps, look for a key marked 1/x or x^-1. If the marking is on the key you just press it while the number whose reciprocal you want is displayed. If the marking is on the face of the calculator you will have to press 2nd F before the key.

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.

I depends on what you mean by INV.
On some Chinese (AUREX, Staples) calculators the second function key is marked as INV. If that is the key you have in mind, on Casios it is the [SHIFT] key. On Sharps it is marked as [2ndF]

If you have in mind the multiplicative inverse (the reciprocal) then your calculator has such a key and it is marked [x^-1]. It the key represented on the following table at the intersection of the 2nd column and the 9th line (RECIPROCAL)



If you are thinking about the inverse of functions, then know that each function shares the same physical key as its inverse. For example to access the arcsine (the function inverse of sine) you press the [SHIFT] key before [SIN]. On the calculator you will notice that near the [SIN] key and to its left there is [SIN^-1].

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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!