Question about Casio FX-115ES Scientific Calculator

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Posted on Jan 02, 2017

SOURCE: want to calculate the inverse of a 4X4 matrix on a

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.

Posted on Jan 05, 2012

Adjoint of a square (non singular matrix) = product of the determinant of matrix by the inverse of matrix. **Adjoint([A])= det( [A]) * [A]^-1**.

To get the inverse of a matrix, have its name displayed on command line then press the reciprocal key [x]^-1

To get the inverse of a matrix, have its name displayed on command line then press the reciprocal key [x]^-1

May 23, 2014 | Casio Fx-991es Scientific Calculator

One example: the determinant of a 4x4 identity matrix is 1.

Use the matrix editor to create a 4x4 matrix with 1s along the main diagonal (upper-left to lower-right) and 0s elsewhere. Then use the det() function to calculate the determinant of this matrix.

Use the matrix editor to create a 4x4 matrix with 1s along the main diagonal (upper-left to lower-right) and 0s elsewhere. Then use the det() function to calculate the determinant of this matrix.

Sep 07, 2013 | Texas Instruments TI-83 Plus Calculator

To make sure that the calculator is misbehaving, I suggest that you create a simple 4X4 matrix, that is not singular, and calculate it reduced row echelon form by hand, then use the calculator to perform the reduction. You can also generate a random 4x4 matrix and calculate the rref forms by hand and with the calculator. If the calculator is defective, try to upgrade the OS. If it is still defective, well, the deck is stacked aaginst you. It may then be time to get another one or to send it for repairs.

Jan 18, 2012 | Texas Instruments Office Equipment &...

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.

Oct 23, 2011 | Casio FX-115ES Scientific Calculator

Sorry, but the fx-991ES only works with matrices up to 3 by 3.

Jun 13, 2011 | Cameras

hi..

Its very easy to do matrix operations in FX 991ES

This calculator can operate up to three Matrices at a time, namely Matrix A (Mat A), Matrix B (MAT B), Matrix C(MAT C).

have a good time with Casio FX 991ES

Its very easy to do matrix operations in FX 991ES

This calculator can operate up to three Matrices at a time, namely Matrix A (Mat A), Matrix B (MAT B), Matrix C(MAT C).

- First to do, is set the calculator in MATRIX Mode

Its Easy

Press MODE button and press 6.

Your Display will show indication of MAT on upper side of screen to show now calculator is in MATRIX Mode - Now we need to Define matrices and set its dimensions.

This product supports matrix of order up to 3x3. That is you can operate matrix of No. of rows=3 and No. of columns=3

To input matrix, Press SHIFT and then 4. This will Pop up Menu for Matrix. Now press 1

Your screen will show as this,

MAT A will be your First Matrix and MAT B will be your Second Matrix and so on.

Press 1 , 2 , or 3 to select Matrix A , B, or C.

here I will Proceed with Matrix A, so I press Numerical 1 Key - Next screen will ask you about the size of matrix.

Press UP or DOWN Keys to view options.

Press Corresponding Numerical keys to select corresponding order. - On Next Screen , enter values on each positions

Press UP, DOWN, LEFT, RIGHT Keys to move around in matrix and specify each element. - Now we inputed Details about Matrix A. If you want to specify other matrices (MATRIX B, MATRIX C) repeat STEPS 2 To STEP 4
- After Specifying required Matrices, we can tell calculator to do operations with them.

Press SHIFT and then 4 and then It will show a menu contains - For example, i need to multiply Matrix A with Matrix B, i'll enter as

SHIFT + 4 + 3 to Input Matrix A

X to enter operator (Here multiplication, You enter + - x / for corresponding arithmetic operations )

SHIFT + 4 + 4 to Input Matrix B

= To show Result

Press UP DOWN LEFT RIGHT Keys to view extra fields, if any.

have a good time with Casio FX 991ES

Mar 26, 2011 | Computers & Internet

The FX-991ES offers simple matrix operations like basic arithmetic, plus the slightly more complex operations determinant and inversion. Furthermore, it is limited to matrices with a maximum size of three rows and three columns.

The rank of a matrix is defined as the number of linearly independent row or column vectors. You can perform a simple partial test for square matrices by calculating the determinant of the matrix:

Unfortunately, this is all support the calculator offers. For small matrices (i.e. 4x4 or smaller), you should familiarize yourself with the Gau? Elimination Method algorithm for solving linear equation systems. It is a two-step procedure where a matrix first is converted to its row echelon form, and second to row canonical form to solve the LES.

You need to follow the algorithm only through the first part, the number of non-zero rows after this step equals the rank of the matrix. With a little exercise you will be able to do it faster on paper than trying to do it with your calculator only.

For larger matrices I suggest to use a PC with more powerful math software (Maple, Mathematica, ...) or, if you know some basic computer programming, just write the necessary program yourself, which is also a very good exercise both in programming and understanding the algorithm.

The rank of a matrix is defined as the number of linearly independent row or column vectors. You can perform a simple partial test for square matrices by calculating the determinant of the matrix:

- Enter the matrix into matrix variable MatA.
- Press [SHIFT] [4] [7] [SHIFT] [4] [3] [)] [=]

Unfortunately, this is all support the calculator offers. For small matrices (i.e. 4x4 or smaller), you should familiarize yourself with the Gau? Elimination Method algorithm for solving linear equation systems. It is a two-step procedure where a matrix first is converted to its row echelon form, and second to row canonical form to solve the LES.

You need to follow the algorithm only through the first part, the number of non-zero rows after this step equals the rank of the matrix. With a little exercise you will be able to do it faster on paper than trying to do it with your calculator only.

For larger matrices I suggest to use a PC with more powerful math software (Maple, Mathematica, ...) or, if you know some basic computer programming, just write the necessary program yourself, which is also a very good exercise both in programming and understanding the algorithm.

Jan 16, 2011 | Casio FX-115ES Scientific Calculator

The enclosed screen capture shows all the possible dimensions for matrices on the Casio FX-991ES. As you can see the maximum dimension of any matrix is 3. You can only create matrices with dimensions less than or equal to 3.

Dec 01, 2010 | Casio FX-115ES Scientific Calculator

The
enclosed screen capture shows all the possible dimensions for matrices
on the Casio FX-119ES/991ES. As you can see the maximum dimension of any
matrix is 3. You can only create matrices with dimensions less than or
equal to 3.

Nov 30, 2010 | Casio FX-115ES Scientific Calculator

Hello,

Just in case : Press [SHIFT][CLR] (9) [3: ALL] to reset the calculator and try [MODE] again.

If that does not work, your calculator may be defective or a fake (not the genuine article). If at all possible, return it to where you bought it and get a refund.

Here is a picture of the FX-115ES, its face looks like the 991ES. Hope I am mistaken.

Just in case : Press [SHIFT][CLR] (9) [3: ALL] to reset the calculator and try [MODE] again.

If that does not work, your calculator may be defective or a fake (not the genuine article). If at all possible, return it to where you bought it and get a refund.

Here is a picture of the FX-115ES, its face looks like the 991ES. Hope I am mistaken.

Oct 18, 2009 | Casio FX-115ES Scientific Calculator

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