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Eigenvalues and eigenvectors on the casio fx9750ga plus. (Preferably complex as well as real.)

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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: I have a casio fx9750GA plus and need to know how ...

The following uses keystrokes and screen captures from the FX-9750GII but the essential information is the same. Use the F6 key to move to next page of TABS (those at the bottom of screen) until you find the TAB that interests you (PROB, RAND#, INT, etc.)

The random number generator function is called Ran# and can be accessed in RUN mode by pressing:
[OPTN] [F6] [F3] (PROB) [F4] to access the (Ran#) function
In the paragraph above, the bold text in square brackets indicates key presses, while the text in parentheses represents the menus that appear at the bottom of the calculator screen. This also assumes there are no menus on the bottom of the screen when you begin. If PROB is already on the screen, then the [F6] key is not necessary, just press [F3] then [F4] at this point.

The Ran# function generates a random decimal number between 0 and 1. If you need to generate a number with a higher range, then there may be extra steps involved. For example, to choose a random number between 0 and 100, you would enter:
Ran#×100 or Ran#(100)

ec9c0df.jpg
Let's say you want to simulate a dice roll, where you get an integer between 1 and 6. Your first step would be to do:
Ran#×6
This will give you a random decimal number between 0 and 6. But we need an integer, not a decimal. To make it an integer, you would change this to:
Int(Ran#×6)

Press [OPTN] [F6] [F4] (NUM) [F2] to access the (Int)

This now gives you an integer between 0 and 5. We just need to add 1 to the result.
Int(Ran#×6)+1
The result should be an integer between 1 and 6.

04419d1.jpg

Posted on Jul 25, 2010

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SOURCE: Matrix - casio fx9750GA plus

This calculator cannot find eigenvalues and eigenvectors of matrices for you. The calculator does have many row and column operation that you can use to solve your problem. You need to know the theory of matrices, determinants, and some eigenvalue and eigenvector finding algorithms.

Posted on Dec 13, 2013

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Eigenvalues


I am sorry to disappoint you but the Casio FX-986G does not handle the calculations of the eigenvalues and eigenvectors of matrices. Maybe the newer OS versions can do that.
The Graph 100+ sold in Europe (I forgot the equivalent model in North America, maybe the FX9860GII Plus) can find eigenvalues and eigenvectors. Here is how it does it. See screen capture below. Compare with your calculator to see if you have the EigVl( and EigVc( commands in the catalog.

ce1e5179-12d2-4e59-a565-71b446c1ded1.png

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1 Answer

Matrix - casio fx9750GA plus


This calculator cannot find eigenvalues and eigenvectors of matrices for you. The calculator does have many row and column operation that you can use to solve your problem. You need to know the theory of matrices, determinants, and some eigenvalue and eigenvector finding algorithms.

Dec 13, 2013 | Office Equipment & Supplies

1 Answer

Matrix casio fx9750giihow can I find eigenvalues and eiginvectors for a matrix in my calculator? :)


This calculator cannot find eigenvalues and eigenvectors of matrices for you. The calculator does have many row and column operation that you can use to solve your problem. You need to know the theory of matrices, determinants, and some eigenvalue and eigenvector finding algorithms.

Dec 13, 2013 | Office Equipment & Supplies

1 Answer

Fx calculator algebra eigenvector casio


You cannot calculate eigenvalues or eigenvectors with this calculator. But here is a bit of the theory of the eigenvalues .
.
7c399098-ccdb-45f8-9d6a-7adfbad3d3f4.png

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The FX-991ES Plus barely handles simple operations on matrices of dimensions up to 3X3. It cannot find eigenvalues or eigenvectors.

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What do you mean by "solve matrix"? Do you want its determinant? Its inverse? The eigenvalues and eigenvector? Solve a system of linear equations?

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1 Answer

Casio FX - 9860G SD have complex equations??


Your question (?) is not clear so I will not try to guess what you really mean.
Be it as it may, the Casio FX-9860G SD can solve a polynomial equation of degree 2 or 3 with REAL coefficients. If the complex MODE is set to REAL it will find the real roots. If the complex mode is set to a+ib, it will find the real and complex roots.

Apparently it will take coefficients that are real, and will give a Ma Error if any coefficient is complex.

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1 Answer

Finding eigenvalue whit algebra


I do not own that calculator so I checked the manual. In the chapter Manual calculations it explains the use of matrices but not a single reference to eigenvalues or eigenvectors. I looked also in the advanced functions chapter but nothing on eigenvalues. I believe you will have to use the general algebraic methods for calculating eigenvalues: characteristic polynomial and its solutions. Set up the equation det (Mat A -lambda Mat I)=0 where A is your original matrix and I is the Identity matrix with same dimensions as A. The determinant will give you a polynomial equation in the eigenvalue lambda. the degree of the polynomial will be equal to the dimension of the matrix. You might want to feed the equation to the polynomial solver to find some eigenvalues.

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1 Answer

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..



Oct 14, 2009 | Casio FX-9750GPlus Calculator

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