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How to find the determinate of a matrix on a casio fx9750GII

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Posted on Jan 02, 2017

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SOURCE: I am using a casio fx9750ga plus. I cannot get

Hello,
I assume yoy know how to define your matrix, but I will repeat it here for others who might not know. You can skip to Calculation
1.Turn Calculator ON. If there are no icons, press [MENU].

Data Entry

2.Use arrows to highlight [MAT] icon. Press [ENTER]
3.Highlight the first line where it says Mat A. Use the right arrow to enter the dimensions of Matrix A. Enter 3 and press [EXE]. The cursor moves to the second dimension. Press 3 and press [ENTER].
4. The matrix entry screen appears.
5. Enter first matrix coefficient a_11 and press [ENTER]
6. Enter a_12 and [ENTER]
.....
Key in last coefficient a_33 and press [ENTER]

Calculation
Press [MENU] and [RUN]
Press [OPTN][F2:MAT][F3:Det] Command echoes on screen as det
Press [F1:Mat] echoes on screen as Mat; screen shows det Mat
Press [ALPHA] A The screen displays det Mat A
Press [ENTER] to calculate the determinant.

If the matrix is not square, you cannot calculate its determinant.

Hope it helps..



Posted on Oct 14, 2009

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SOURCE: When I insert the statistical

It is difficult to know exactly WHY it gives you inaccurate values, or does it? I am inclined to believe that you might (just might) have made mistakes entering the data. (A single error in an extreme value will affect the mean).

I would blame the calculator only after I have made certain that I did not make mistakes myself. (That is my way of doing things.)

Posted on May 29, 2011

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1 Answer

How to calculate adjoint of matrix in casio


You have the relation [A]^-1 (inverse of A) =Adj([A])/det([A])
Create a square matrix [A]
Calculate its determinant det(A) and store it in some variable (why not D). Calculate the inverse of A. Multiply the result by the determinant.

Jun 12, 2014 | Casio FX-115ES Scientific Calculator

1 Answer

I can't find the matrix button on my fx-9750GII


In the Run>Mat screen there is a tab at the bottom left of the screen. If you press F1 it opens the tab and shows you other tabs for the matrix functions.

Nov 14, 2012 | Casio FX9750GII Graphic Calculator

2 Answers

How do i find the inverse of a matrix on a CASIO fx-9750GII


Once the matrix is created you can use the reciprocal key to get the inverse.
I hope you will not hold against me if I showed the whole porocess. (No reflexion on your or anybody's abilities to create a matrix. Just trying to be helpful to more people.)

Press Menu to display icons.

k24674_128.jpg
Press 1 or use Arrows to highlight Run/Mat.Press EXE

k24674_129.jpg

Press the F1 key to activate the Mat TAB.

k24674_130.jpg

While a matrix label is higlighted press F3:Dim to enter the dimensions.
Matrix must be square.

k24674_131.jpg

Fill her up!

k24674_132.jpg

Press EXE after entering the last element.
Then press EXIT to return to the Run/Mat Screen.
In Run/Mat screen press the OPTN key. Press F1 to enter the Mat identifier
followed by [ALPHA] A (if the matrix you created is stored in A)
At this point the screen displays Mat A.

Any of the continuations of the command shown below will yield the inverse matrix.
The minus sign you see in the 2nd and 3rd commands below is the change sign (-)


k24674_134.jpg
For the bogus 2X2 matrix I entered, the result is as follows.
k24674_133.jpg

Notice that even if inside the answer matrix the elements are displayed as decimals, the
values you will see at the bottom are exact fractions.

Aug 26, 2011 | Casio FX9750GII Graphic Calculator

1 Answer

Hoe to calculate a inverse matrix?


Sorry if post is too long. Skim through it to find the inverse of a matrix in part at the end:Part E

Note: Matrix must be square (nXn) and non singular (its determinant not equal to zero)

A. Define a matrix (Create it)

  1. Turn calculator ON.
  2. Press Menu,select the MAT icon and press [EXE]
  3. You see a list of possible matrix labels (A, B, C,D,E,F)
  4. All that have not been created have a "none" to their right
  5. Highlight a matrix name and press the right arrow. Where there was "none" , you have a template 0x0.
  6. That is where you specify the dimensions (mxn). example. 2x2
  7. Enter the first dimension and press [EXE]
  8. Enter the 2nd dimension and press [EXE]
  9. A matrix template opens where you enter the coefficients left to right and up down.
  10. After each coefficient press [EXE]. Cursor moves to the next coefficient, etc.
At the bottom of the screen you have 3 menus for Row and column manipulations. But those will have to wait for now.
Press [SHIFT][QUIT] to return to the list of matrices to create new ones

B Operations on matrices
Once you have one matrix, you can do operations on it: Calculate the determinant (if matrix is square), calculate its inverse, transpose, augment it, fill it, etc..
  1. These operations are accessed as follows.
  2. Quit the matrix editor by pressing [Menu] and selecting the [Run] application.
  3. Press [OPTN][F2:MAT]
  4. You have the menus Mat,M(atrix)->L(ist), Det(erminant), Trn (transpose), Aug(ment) ->, Iden(tity),Dim(ension) Fill
Example : calculate the determinant of a matrix A (already defined).
  1. You press the [OPTN][F2:MAT] key sequence (just above)
  2. Press [F3:Det]; the command det is displayed on screen.
  3. Press [F1:Mat] the identifier Mat is displayed.
  4. Press [ALPHA] A; screen display det Mat A.
  5. Press [EXE] to get the value of the determinant.
C. Square of Matrix A
[OPTN][F2:MAT] (MAT) [Alpha] A ^2 [EXE]

D. Product of two compatible matrices MatAXMatB

[OPTN][F2:MAT] (MAT) [Alpha] A [*] (MAT) [ALPHA] B [EXE]

k24674_10.jpg

Part E Invert a (square, non singular) matrix that was already defined.

Press [OPTN] [F2:Mat] to open a screen similar to the one in capture above
Press [F1:Mat] to have identifier Mat displayed.
Enter the name of the matrix by pressing [ALPHA] A, for example.
Press [SHIFT] [ ) ] activate the (x^-1) key.

This is what you might see (with parentheses and without).
k24674_31.jpg

Press [EXE] button to calculate the inverse.

Feb 25, 2011 | Casio FX9750GII Graphic Calculator

1 Answer

How do you do matrix?


Here is a small sample of things you can do with matrices.

A. Define a matrix (Create it)

  1. Turn calculator ON.
  2. Press Menu,select the MAT icon and press [EXE]
  3. You see a list of possible matrix labels (A, B, C,D,E,F)
  4. All that have not been created have a "none" to their right
  5. Highlight a matrix name and press the right arrow. Where there was "none" , you have a template 0x0.
  6. That is where you specify the dimensions (mxn). example. 2x2
  7. Enter the first dimension and press [EXE]
  8. Enter the 2nd dimension and press [EXE]
  9. A matrix template opens where you enter the coefficients left to right and up down.
  10. After each coefficient press [EXE]. Cursor moves to the next coefficient, etc.
At the bottom of the screen you have 3 menus for Row and column manipulations. But those will have to wait for now.
Press [SHIFT][QUIT] to return to the list of matrices to create new ones

B Operations on matrices
Once you have one matrix, you can do operations on it: Calculate the determinant (if matrix is square), calculate its inverse, transpose, augment it, fill it, etc..
  1. These operations are accessed as follows.
  2. Quit the matrix editor by pressing [Menu] and selecting the [Run] application.
  3. Press [OPTN][F2:MAT]
  4. You have the menus Mat,M(atrix)->L(ist), Det(erminant), Trn (transpose), Aug(ment) ->, Iden(tity),Dim(ension) Fill
Example : calculate the determinant of a matrix A (already defined).
  1. You press the [OPTN][F2:MAT] key sequence (just above)
  2. Press [F3:Det]; the command det is displayed on screen.
  3. Press [F1:Mat] the identifier Mat is displayed.
  4. Press [ALPHA] A; screen display det Mat A.
  5. Press [EXE] to get the value of the determinant.
C. Square of Matrix A
[OPTN][F2:MAT] (MAT) [Alpha] A ^2 [EXE]

D. Product of two compatible matrices MatAXMatB

[OPTN][F2:MAT] (MAT) [Alpha] A [*] (MAT) [ALPHA] B [EXE]

k24674_10.jpg

Press the F6 key to access other functions.

Jan 23, 2011 | Casio FX9750GII Graphic Calculator

1 Answer

On the casio fx-9750GII, how do you get to the matricies?


The Matrix application share the same icon as the RUN. When you select the RUN/MAT icon you see a possibly blank screen at the bottom of which there is a TAB called >MAT. Press F1 and all available matrix tools will appear.

Jan 05, 2011 | Casio FX9750GII Graphic Calculator

1 Answer

How to find determinant


Given a square matrix, you can find its determinant by using the determinant function available through SHIFT 4 7. SHIFT 4 brings up the matrix menu, and 7 selects the determinant function.

Refer to the "Matrix Calculations" section in the manual, beginning on page E-57, and items #096-105 in the appendix. If you've misplaced your manual and/or appendix, you can download them from
http://support.casio.com/manualfile.php?rgn=1&cid=004001004

Dec 12, 2010 | Casio FX-115ES Scientific Calculator

1 Answer

How do I find the solution to a matrix once the coefficients are entered?


I am afraid that "find the solution of a matrix" does not mean anything. However if you want to perform some arithmetic operations on the matrices ( multiplication, addition, subtraction) you can do so using the regular operation keys.
If on the other hand you want to calculate determinants of square matrices, inverse square matrices etc.
Go to the RUN/MAT screen and press [OPTN, then press F2 to open access these operations and this is what you see.
k24674_9.jpg
F1 type the MAT identifier in command line
M>L converts a matrix to a list
Det calculates the Determinant of a square matrix
Trn transposes the matrix,
etc.
To invert a square matix, use the [X^-1] key e.g. MatA^-1

Nov 22, 2010 | Casio FX9750GII Graphic 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

I want to solve my determinent of matrix A


Assuming you have a square matrix in MatA, press SHIFT [MATRIX] 7 SHIFT [MATRIX] 3 EXE

[MATRIX] is the shifted function of the 4 key. MATRIX 7 invokes the determinant function and MATRIX 3 names MatA

Oct 23, 2010 | Casio FX-115ES Scientific Calculator

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