TI-92 Help -- Matrices

• Entering a matrix from the home screen

• Entering a matrix using the Data/Matrix editor

• The elements of a matrix

• Adding matrices

• Multiplying matrices

• Inverting a matrix

• The determinant of a matrix

The simplest way to enter a matrix into the TI-92 is shown in the screen at the right. Note: Each row is enclosed in square brackets with the entries separated by commas. All the rows are enclosed in another set of square brackets but the rows are not separated by commas.
The screen at the right shows another way of entering a matrix. Using this second method all the entries are listed enclosed by one set of square brackets. The entries in each row are seperated by commas and the rows are seperated by semicolons. You can also enter matrices using the Data/Matrix Editor application.
Matrices may have real or complex entries as shown on the screen at the right.
The screen at the right shows how to access a particular entry in a matrix.
We can add two matrices in the obvious way as shown in the screen at the right.
We can multiply a matrix by a scalar in the obvious way as shown in the screen at the right.
We can multiply two matrices as shown in the screen at the right.
The screen at the right illustrates how we can find the inverse of a matrix.
The screens at the right illustrate how we can find the determinant of a matrix.