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Inverse matrix 3x3 casio fx-5800p - Casio FX-115ES Scientific Calculator

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SOURCE: Trying to get the inverse of a matrix

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

moz-screenshot-1.pngd2bc4ab.jpg
The matrix used in the exemple is
a_11=2 a_12=1 a_21=1 a_22=2
Here is the link to download the manual and the appendix

http://support.casio.com/manualfile.php?rgn=1&cid=004001004

Hope it helps

Posted on Sep 06, 2009

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SOURCE: how to calculate inverse of a 3x3 matrix in casio

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

moz-screenshot-1.pngd2bc4ab.jpg
The matrix used in the exemple is
a_11=2 a_12=1 a_21=1 a_22=2
Here is the link to download the manual and the appendix

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

  • 7993 Answers

SOURCE: how do i find the inverse of a 3x3 matrix on my

Create the Matrix in the Run/Mat screen

2_7_2012_12_00_19_am.png
Press 1 to enter Run/Matrix screen

2_7_2012_12_01_22_am.png
Press F1 >MAT. The next screen opens. Enter the dimensions (3x3)

2_7_2012_12_02_07_am.png
In the template enter the coefficients. Press EXE after each item.

2_7_2012_12_03_03_am.png
Press the AC button to exit thye matrix editor screen.

Press SHIFT 2 to type the Mat identifier on the command line.
Press the ALPHA key followed by A (if you are working with the A matrix.)
At this point you have Mat A on the command line.
Press SHIFT ) to get the x^-1 function. That is the one that calculates the inverse of a Matrix.


2_7_2012_12_04_12_am.png
2_7_2012_12_07_37_am.png

Posted on Feb 07, 2012

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How do i put my casio fx -100ms in matrix mode and how do i solve


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The Casio FX-570MS does not handle matrices. So you cannot create matrices, let alone invert them. Sorry.
The Casio FX115 ES handles matrices for up to 3X3 dimension. Create the matrix.Have its name displayed on the command line and press the [x^-1] (reciprocal ) key.

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Where is the inverse button on the casio fx-82ES


For the reciprocal of a number, enter the number then press the key marked with an x^-1. You might have to use the SHIFT key first. For inverse of trigonometric functions use the SHIFT key followed by the function name. The inverse of LN is e^x. The inverse of log is 10^x. To calculate the inverse of a matrix, enter the name of the (already created) square matrix then press x^-1.

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Want to calculate the inverse of a 4X4 matrix on a casio 991es


Sorry, this calculator can handle matrices with dimensions ranging from 1X1 up to 3X3 . To deal with 4X4 matices you need a graphing calculator such as the CASIO FX-9570G Plus, the Ti83Plus.

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How to do x=BA^-1, in order to solve a system of equations 3x3 with a Casio FX-115 ES


Let your system of linear equations be [A][X]=[B] where [A] is a 3x3 matrix, [X] is column vector ( a 3x1 matrix) , and [B] is also a column vector or (3x1) matrix.

Assuming you are able to invert the [A] matrix to find [A^-1].
Multiplying on the keft by [A^-1] the system of equations you get
[A^-1].[A][X]=[A^-1][B].
But since the product [A^-1][A] is the (3x3) Identity matrix, the left side of the equation is jut [X], while the right side is [A^-1][B]. As you can see it is not [B][A^-1] .
To solve your problem, you should define your [A] matrix, define the [B] column vector (3x1) matrix, then perform the operation [A^-1][B] using the [X to -1] power key to calculate the inverse [A^-1].

Jan 10, 2011 | Casio FX-115ES Scientific Calculator

1 Answer

How do i find the inverse of a 3x3 matrix on my Casio FX9750GII calculator? thanks


Create the Matrix in the Run/Mat screen

2_7_2012_12_00_19_am.png
Press 1 to enter Run/Matrix screen

2_7_2012_12_01_22_am.png
Press F1 >MAT. The next screen opens. Enter the dimensions (3x3)

2_7_2012_12_02_07_am.png
In the template enter the coefficients. Press EXE after each item.

2_7_2012_12_03_03_am.png
Press the AC button to exit thye matrix editor screen.

Press SHIFT 2 to type the Mat identifier on the command line.
Press the ALPHA key followed by A (if you are working with the A matrix.)
At this point you have Mat A on the command line.
Press SHIFT ) to get the x^-1 function. That is the one that calculates the inverse of a Matrix.


2_7_2012_12_04_12_am.png
2_7_2012_12_07_37_am.png

Nov 17, 2010 | Casio FX9750GII Graphic Calculator

1 Answer

How to calculate inverse of a 3x3 matrix in casio fx-991MS calculator?


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

moz-screenshot-1.pngd2bc4ab.jpg
The matrix used in the exemple is
a_11=2 a_12=1 a_21=1 a_22=2
Here is the link to download the manual and the appendix

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

Hope it helps


Sep 04, 2009 | Casio FX-115ES Scientific Calculator

1 Answer

Trying to get the inverse of a matrix


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

moz-screenshot-1.pngd2bc4ab.jpg
The matrix used in the exemple is
a_11=2 a_12=1 a_21=1 a_22=2
Here is the link to download the manual and the appendix

http://support.casio.com/manualfile.php?rgn=1&cid=004001004

Hope it helps

Jul 13, 2009 | Casio FX-115ES Scientific Calculator

1 Answer

I get a dimension error on my screen from my matrix


Hello,
You cannot calculate the inverse of an arbitrary matrix. It must be a square matrix (nxn) with non zero determinant. Make sure dimensions m and n are equal. (2x2), (3x3)

To calculate its determinant [Shift][MATRIX] [7:det] [SHIFT][MATRIX][3:MatA] close the right parenthesis and [=].
If determinant is different from zero then you can calculate its inverse.
If matrix MatA has already been defined, you calculate its inverse as follows;
[SHIFT][MATRIX][3:MatA] [X^-1][=]. Use the X to -1 power , the one under [MODE].
For well-behaved matrices you calculate the inverse directly without worrying about the determinant.
Hope it helps.

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According to the manual for the Casio FX115ES, the largest matrix it solves is a 3x3.

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