Quick Guide to
MAT |

's extremely
simple Windows
interface and its step by step tutorials, facilitate the teaching and learning
of matrix operations and its applications.
MAT
's main screen, by clicking on the
"ASPto MAT" title below the outline border of the graphic pane. By this action, the
user is prompted with 's main screen, which covers the entire screen space.
MAT
The typing of all matrices should start with an openning square bracket "[", and should end with a closing square bracket "]". The elements are typed row by row, starting with the top one. The different elements of the row should be separated by commas ",". The starting of a new row is indicated by a semi-colon ";".
The user types: The following picture illustrates the details of the matrix editing window:
The user types: The details in the editing window are shown in the following picture:
always be entered as the last row.
For example, to enter the Simplex Tableau for the following problem: The user types: The tableau displayed by
The simplest and quickest way of changing the values of elements in a matrix is by
right mouse button clicking on the element to be changed and by using the up/down
arrows on the spin control window that is prompted, to increase/decrease the numerical
values. If the changes involve the typing of algebraic expressions or if the actual dimensions
of the matrix have to be modified, the editing box for the particular matrix should be accessed.
This is done through: Edit Expression (an element in the relevant
matrix should be previously highlighted to indicate which is the selected matrix, otherwise
the very last matrix entered would be edited).(b) The matrix handling menu for the matrix (accessed by right mouse
button clicking on the region of the screen limited by the matrix's OPENING bracket) -
option: Edit Matrix
Once the editing window is accessed, the relevant changes should be made on the
edit box (upper part of the window), and the changes would be instantly refreshed on the
lower part of the window. When the changes are done, the "Enter" key should be pressed or
the
Once at least one matrix is displayed on the Depending on where on the screen the user clicks, and with which mouse button, the
diferent menus will pop up. When a matrix is displayed on the screen, new
"clicking spaces" are defined. This is illustrated in the following picture:
It is accessed by RIGHT mouse button clicking on the opening bracket area of the matrix
of interest. The menu options are:
It is accessed by RIGHT mouse button clicking on the closing bracket area of the matrix
of interest. This menu offers operations within a unique matrix expression.
The menu options are:
after accessing the edit window through the The operation will appear on the
after accessing the edit window through the The operation will appear on the The following figure illustrates one step in a Simplex evaluation:
screen.
MAT For example, to illustrate the multiplication of a generic (2 x 3) matrix by a
generic (3 x 2) matrix, the following can be entered through the The result of the multiplication is shown on the |