Question about Casio Fx-992s Scientific Calculator

# How do i calculate Rec on fx-992s casio calculator?

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### k24674

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Rec? Conversion from polar to rectangular coordinates ? You need and a radius (length) and an angle (Rec (r, theta)). Make sure the angle unit is the one you want: degrees or radians.

Posted on Sep 22, 2018

### Anonymous

SOURCE: m mod n in Casio fx991MS

there is one button ab/c beneath CALC... if u want to calculate 7 mod 4 then... u should press 7 then ab/c 4 and equal to
1, 3 ,4 which is 4*1=4 and 7-4=3 remainder...

Posted on Jun 29, 2009

### k24674

Hello,

Find on the calculator the [nPr] key either (you may have to use the [2nd] or [2ndF] key) then
1. Enter the number that corresponds to n eg. 18
2. Press the [nPr] key
3. Enter the number that corresponds to r eg. 5

18[nPr]5 gives 1028160

If you calculate combinaitions use [nCr] key.

Hope it helps

Posted on Sep 06, 2009

### k24674

Hello,
Here is the solution for th FX-991ES.
Hello,

The error may be due to the key you used to signifie inverse. It says in the manual that you should use the key x^-1 not the one used to input general powers.
Here is screen capture from the Appendix to the manual. The picture shows the sequence of keys to press to obtain the inverse of a 2x2 matrix. It is taken from page 41 of Appendix

The matrix used in the exemple is
a_11=2 a_12=1 a_21=1 a_22=2

http://support.casio.com/manualfile.php?rgn=1&cid=004001004
The link is for FX991ES. Look there foe you manual.

Hope it helps

Posted on Sep 07, 2009

### k24674

Hello,
[OPTN][LIST] scroll right till you find %. Press the function first then the number. It gives you the percent.
Hope it helps.

Posted on Oct 01, 2009

### k24674

Hello,
I am only looking for a plausible cause of the error, because I do not believe your calculator can make such a mistake. I think you accidentally activated the Exponential display format and did not pay attention to the small, raised -03 that came at the end of the number displayed. It is a common mistake for those not very familiar with Scientific or exponential notation.

Let us try to reset your calculator to the normal (floating point) format.
Press the [MODE] key a number of times until you reach a screen that has FIX, SCI, NORM and under each one a number (FIX 1, SCI 2), Norm 3). To have the number of decimal place you gave in your result (4 decimal digits), you press 1 to select Fix then 4.

Be aware that scientific calculators usually stop displaying results in floating point format ( 0.0000045 ) if the number is smaller then 0.001. So basically, 0.00099 will be displayed as 9.90-04, -04 being raised above the level, and in smaller size.

Hope it helps.

Posted on Oct 02, 2009

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### How to make my degree button work?

I am sorry but the image does not show any Degree button.
To set the angle unit you have to press the Mode button twice before you arrive at the angle unit configuration. See the screen capture below.

Jan 16, 2014 | Casio Fx-992s Scientific Calculator

### How do i make the degree button of my fx992s work?

I am sorry but the image does not show any Degree button.
To set the angle unit you have to press the Mode button twice before you arrive at the angle unit configuration. See the screen capture below.

Jan 16, 2014 | Casio Fx-992s Scientific Calculator

### How and key to inverse

Look for a key marked [x^-1] or [1/x]. The marking may be on the key or on the face of the calculator. In the latter case you will have to press the SHIFT key first. Before you can calculate the reciprocal of a number the number must be entered.

Oct 23, 2012 | Casio Fx-992s Scientific Calculator

### Casio fx 82 au plus convert polar to rectangular

To convert from Polar to Rectangular
PRESS [SHIFT and -Rec] then enter the coordinate and angle

e.g. [SHIFT and -Recl]
Rec(15,0)=
r=15
0=0

Jun 18, 2011 | Casio FX-115ES Scientific Calculator

### My casio fx-992s is showing fix and deg on the screen. I think the "fix" is causing me a problem but I can't get rid of it. All my decimals are being rounded up to whole numbers! Thanks

The DEG is merely indicating that the angular mode is set to degrees. If you want to change it to radians or grads, press SHIFT MODE and make your selection.

Likewise, the FIX is merely indicating that the calculator is displaying numbers in fixed decimal notation. If you're not seeing any digits to the right of the decimal point, then you're in FIX 0 mode. To change it, press SHIFT MODE. You can choose FIX and the calculator will prompt for the number of digits, or you can select NORM.

Nov 29, 2010 | Casio Office Equipment & Supplies

### I am a casio fx-82MS user. i would like to know how i can convert polar form to rectangular form in my calculator

Hello,
Press [MODE] and select [1:COMP]
Press [SHIFT][MODE] and select [3:Deg]. You can also use rad if the angle you are given is in radians.
To start the conversion
Press [SHIFT][-] (Rec) screen displays Rec(
Key in the radius r , ex: 3 screen displays Rec(3
Press [SHIFT][)] (,) to enter comma separator Rec(3,
Key in the angle in degrees, ex: 57.3; screen displays Rec(3,57.3
Press ) to close parentheses; screen displays Rec(3, 57.3)
Press [=]
Screen displays
Rec(3, 57.3)
X=1.620720961
Y=2.524532346

X and Y are the values of the coordinates.

Rec(3, Pi) gives X=-3, Y=0

I just realized that your question pertains to the FX82MS but is listed under the FX115ES (That is quite a difference) So my answer above does not concern you but I will leave it as is should anyone need the answer for the FX115ES.

Look at the enclosed screen capture for the FX82MS

Nov 13, 2010 | Casio FX-115ES Scientific Calculator

### How to change polar form to rectangular form by calculator?

Use the Rec function (shift of the - key).

Rec(r,t) converts a polar value of magnitude r and angle t in the current angular mode. The real value is assigned to X and the imaginary value is assigned to Y.

Use the Pol function (shift of the + key) for the reverse.

It's on page E-37 of the manual. If you've misplaced your manual, you can download a new one from http://www.casio.com/support/manuals

May 28, 2010 | Casio FX-115ES Scientific Calculator

### Where is the comma on the casio fx-992s

You can download the manual at Search-Manual-Online.com, It is in a PDF file, so you can save it on your computer.

May 02, 2010 | Office Equipment & Supplies

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