Question about Casio FX-115ES Scientific Calculator

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I want to learn how to solve matrix with my calculator casio fs 115es

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Hello,
I will assume you are familiar with the basic concepts of matrix algebra.

Turn calculator [ON]
Press [MODE][6:MATRIX]. Select the matrix you want: MatA, MatB, Matc
Let us assume you select 1: MatA.
MatA (mxn) sceen: there you specify the dimensions of the matrix, the number of rows, and the number of columns. Press 5 for a 2x2 matrix.
The matrix entry screen shows, a rectangle is highlighted. Enter there the a_11 coefficient, exemple 1.
1 [ENTER]. Highlight moves to a_12 ;
1 [ENTER] highlight moves to a_21
1 [ENTER] highlight moves to a_22
2 [ENTER] Highlight stays on a_22.
Matrix is defined. The values I used are arbitrary. Enter your own.

Suppose you want to calculate the determinant of MatA
Press [SHIFT][MATRIX][7:det][SHIFT][MATRIX][3:MatA] [)] [=]

Now you want to calculate the square of matA.
Press [SHIFT][MATRIX][3:MatA] [x^2][=]
A 2x2 matrix is displayed. It is MatA[^2].

If you define MatA, MatB, MatC y

Posted on Sep 27, 2009

  • k24674 Sep 27, 2009

    Something happened. I continue here. If you define MatA, MatB, MatC you can add them, multiply them, divide them, raise to a power, Certain operations require special conditions on the numbers of rows an number of colums. But that is part of the theory on matrices.



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

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