Casio FXCP400 2-5Matrix and Vector Calculations, To calculate, To calculate, in a single line, To input the matrix, To input the matrix, Inputting Matrix Data

2-5 Matrix and Vector Calculations

This section explains how to create matrices, and how to perform basic matrix calculations.

Tip: Since a vector can be viewed as 1-row by n-column matrix or n-row by 1-column matrix, this section does not include explanations specifically about vectors. For more information about vector-specific calculations, see the explanations about the applicable [Action] menu items in “2-7 Using the Action Menu”.

Inputting Matrix Data

You can input matrix values in a single line in the work area, or input matrix values using an actual on-screen matrix.

Inputting Matrix Values in a Single Line

		1	2
0219	To input the matrix			and assign it to the variable “mat1” in the Main application work area
		3	4

Matrix Variable Element Operations

You can recall the value of any element of a matrix variable. You can also assign a value to any element in a matrix.

0220 To recall the value in row 2, column 1 of the matrix variable “mat1” of example 0219 0221 To assign 5 to the element at row 1, column 2 of “mat1”

Inputting Matrix Values Using an Actual On-Screen Matrix

• Create a new 1-row × 2-column matrix ......................................................................................................							6
• Create a new 2-row × 1-column matrix ......................................................................................................							7
• Create a new 2-row × 2-column matrix					.....................................................................................................		8
• Add a column to the currently displayed matrix .........................................................................................							6
• Add a row to the currently displayed matrix ...............................................................................................							7
• Add both a row and column to the currently displayed matrix ...................................................................							8
			2	3
		1
0222	To input the matrix					and assign it to the variable “mat2”
		4	5	6

Performing Matrix Calculations

This section provides examples of how to perform the most basic types of matrix calculations.

Matrix Addition, Subtraction, Multiplication, and Division

		1	1			2		3
0223	To calculate			+						in a single line
		2	1			2		1
			1			2		3
		1
0224	To calculate			×						using an actual on-screen matrix
		2	1			2		1
							2
					1
0225	To multiply the matrix								by 5
					3		4

Chapter 2: Main Application 56