Matrices on the TI-83
10-10 in the TI-83 Guidebook
The TI series calculator performs numerous matrix operations. This example shows Gaussian Elimination. The function rref is a easy way to find the reduce-row echelon form of any size matrix. (up to 99 rows) It has many applications in this book.
Press . Press to display the MATRX EDIT menu. Press 1 to select 1:[A]. | ||
Press 2 2 to define a 3×4 matrix. (3 rows, 4 columns) The rectangular cursor indicates the current element. Ellipses (...) indicate additional columns beyond the screen. | ||
Press -2 4 for the first row. Press -3 7 for the second row. |
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Press [QUIT] to return to the home screen. If necessary press to clear the home screen. | ||
Press 1 to select 1:[A] from the MATRX NAMES menu. Press . | ||
You can leave your matrix in fractional form. |
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Experiment using exponents with matrices. |
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Press 1 to select 1:[A] from the
MATRX NAMES menu. Press 2 . This is the same as [A] × [A] . Press 3 . This is the same as [A] × [A] × [A] . |