Texas Instruments TI-84 PLUS - Graphing Calculator User Manual

Chapter 10: Matrices 159
ref(, rref(
ref( (row-echelon form) returns the row-echelon form of a real matrix. The number of columns must
be greater than or equal to the number of rows.
ref(matrix)
rref(
(reduced row-echelon form) returns the reduced row-echelon form of a real matrix. The number
of columns must be greater than or equal to the number of rows.
rref(matrix)
rowSwap(
rowSwap( returns a matrix. It swaps rowA and rowB of matrix.
rowSwap(matrix,rowA,rowB)
row+(
row+( (row addition) returns a matrix. It adds rowA and rowB of matrix and stores the results in rowB.
row+(matrix,rowA,rowB)

Texas Instruments TI-84 PLUS - Graphing Calculator Specifications

General

Type	Graphing Calculator
Display Type	LCD
Screen Resolution	96 x 64 pixels
Processor	Zilog Z80
Memory	24 KB RAM, 480 KB Flash ROM
Power Source	4 AAA batteries (with backup lithium battery)
Connectivity	I/O port
Weight	7.4 oz (210 g)
Software	TI-OS (Texas Instruments Operating System)