Operation Manual

Chapter 10: Matrices 151
Using Editing-Context Keys
Using Matrices with Expressions
To use a matrix in an expression, you can do any of the following.
• Copy the name from the
MATRX NAMES menu.
• Recall the contents of the matrix into the expression with yK (Chapter 1).
• Enter the matrix directly (see below).
Entering a Matrix in an Expression
You can enter, edit, and store a matrix in the matrix editor. You also can enter a matrix directly in an
expression.
In MathPrint™ mode, use the
MTRX shortcut menu to enter this kind of matrix:
1. Press t ` † ~ ~ Í † Í to define the matrix dimension.
2. Press
1 ~ 2 ~ 2 ~ 4 ~ 5 ~ 6 ~ to define the matrix.
3. Press Í to perform the calculation.
To enter a matrix in a Classic mode, follow these steps.
• Press y [
[ ] to indicate the beginning of the matrix.
• Press y [
[ ] to indicate the beginning of a row.
• Enter a value, which can be an expression, for each element in the row. Separate the values with
commas.
• Press y [
] ] to indicate the end of a row.
• Repeat steps 2 through 4 to enter all of the rows.
Key Function
| or ~ Moves the edit cursor within the value
† or } Stores the value displayed on the edit line to the matrix
element; switches to viewing context and moves the cursor
within the column
Í Stores the value displayed on the edit line to the matrix
element; switches to viewing context and moves the cursor to
the next row element
‘ Clears the value on the bottom line
Any entry character Copies the character to the location of the edit cursor on the
bottom line
y 6 Activates the insert cursor
{ Deletes the character under the edit cursor on the bottom line