Working With Matrices - Texas Instruments TI-84 Plus CE Getting Started

Working with Matrices

You can enter matrices using the matrix editor on your graphing calculator. For
example, you can perform the following operations on matrices:
• Addition
• Division
• Elementary Row Operations
To use the matrix editor:
Press y ¾.
1.
Press ~ to navigate to the EDIT submenu.
2.
3. Select from one of 10 allowed matrix variable names [A] – [J].
4. Enter the dimension of the matrix, then enter values in each matrix cell.
Once in the editor, use the arrow keys to navigate between cells.
Note:
Example:
Matrix [C] as a 3x3 matrix is now in memory.
To perform a calculation with a matrix:
Press y 5 to go to the Home Screen.
1.
Press y ¾ use the MATH submenu to select a matrix command.
2.
3. Use the NAMES submenu to paste the matrix name.
A matrix name, such as [C], is a special character and can ONLY be
Note:
pasted for a calculation from the ¾ NAMES menu and not typed from
the calculator keypad.
• Inverses
• Multiplication
• Subtraction
Working with Matrices 39