Question about Texas Instruments TI-30XA Calculator

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TI-30xa Calculator Reciprocal Key

Does this calulator have a reciprocal key?

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  • Anonymous Mar 17, 2014

    help

  • Anonymous Mar 24, 2014

    how to set significant digits

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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!

Posted on Oct 04, 2007

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Related Questions:

1 Answer

How to do reciprocal identities with the TI-30XA Calculator


Your question is not clear. To calculate the reciprocal of a number on display use the x^-1 or 1/x key, or just enter 1/ number.

Jul 01, 2014 | Texas Instruments TI-30XA Calculator

1 Answer

How do I find the reciprocal of a number


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.

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1 Answer

Calculator 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

Jan 29, 2014 | Office Equipment & Supplies

2 Answers

Reciprocal key


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

May 07, 2013 | Sharp EL-520WBBK Calculator

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Hi I'm trying to find the reciprocal sign on my Casio fx-300es


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.

Aug 09, 2011 | Casio fx-300ES Calculator

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Where do i find the reciprocal key on the casio fx-115ES


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

Jul 19, 2011 | Casio FX-115ES Scientific Calculator

1 Answer

How do i do reciprocals on the TI-84


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.

Aug 25, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

How do i use my calulator to slove this problem .5/6(12x 6) 1/2(6x 14) I need to know how to program and use my calulator for a basic algebra class


The keystrokes you would use to solve the problem is as follows:
(I will use the / to indicate the division symbol)

.5
/
6
X
[( key
12
X
6
)] key
X
1
/
2
X
[( key
6
X
14)] key
=

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