Casio fx-5800P k Matrix Calculation Overview, k About the Mat Ans Screen, k Inputting and Editing Matrix Data, input, Pressing, You can press

Matrix Calculations (COMP)

To perform the example operations in this section, first select COMP (N1) as the calculation mode.

k Matrix Calculation Overview

Matrix calculations are performed by first storing the matrices in one of six matrix memory areas named Mat A through Mat F, and then using the matrix area variables to perform the

actual calculation. To perform a matrix calculation like					2 0	+	1 2	, for example, you would
	2 0		1 2		0 2		3 4
input		into Mat A and		into Mat B, when perform the calculation Mat A + Mat B.
	0 2		3 4

Matrix calculation results are displayed on a Mat Ans screen.

k About the Mat Ans Screen

Any calculation result that is a matrix is stored in Matrix Answer memory named “Mat Ans”. You can use the Mat Ans screen to view the matrix that is currently stored in Mat Ans.

•Each of cells on the Mat Ans screen shows up to six digits of the value currently stored in the cell.

•To check the value stored in a cell, use the cursor keys to move the highlighting to the cell. This will cause the full value contained to appear in the value display area at the bottom of the screen.

•If a cell contains a fraction or sexagesimal value, the applicable cell on the Mat Ans screen will show the decimal format equivalent. When you move the highlighting to the cell, the value will appear in the applicable fraction or sexagesimal format in the value display area.

•Though the Mat Ans screen looks very similar to the matrix editor screen, you cannot edit a matrix on the Mat Ans screen.

•Pressing E while the Mat Ans screen is on the display will switch to the calculation screen.

•You can press +, -, or another operator key while the Mat Ans screen is on the display to start a calculation that uses the current Mat Ans contents (like “Mat Ans+”). This is similar to Answer Memory operations (page 32). For more information, see “Performing Matrix Calculations” (page 62).

k Inputting and Editing Matrix Data

You can input data for up to six matrices, named Mat A through Mat F, and then use the matrix names as variables in calculations. There are two methods you can use to input data into a matrix: using the matrix editor screen and using the value assignment command (/).

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