HP Prime Graphing NW280AAABA manual Matrix functions and commands, Sns AQ1E, Commands

6.Return to Home view and left-multiply the constants vector by the inverse of the coefficients matrix:

HAQ2

Sns AQ1E

The result is a vector of the solutions: x = 2, y = 3 and z = –2.

An alternative method is to use the RREF function (see page 476).

Matrix functions and commands

Functions	Functions can be used in any app or in Home view. They
	are listed on the Math menu under the Matrix category.
	They can be used in mathematical expressions—primarily
	in Home view—as well as in programs.
	Functions always produce and display a result. They do
	not change any stored variables, such as a matrix
	variable.
	Functions have arguments that are enclosed in
	parentheses and separated by commas; for example,
	CROSS(vector1,vector2). The matrix input can be either a
	matrix variable name (such as M1) or the actual matrix
	data inside brackets. For example, CROSS(M1,[1 2]).
Menu format	By default, a Matrix function is presented on the Math
	menu using its descriptive name, not its common
	command name. Thus the shorthand name TRN is
	presented as Transpose and DET is presented as
	Determinant.
	If you prefer the Math menu to show command names
	instead, deselect the Menu Display option on page 2 of
	the Home Settings screen (see page 26).
Commands	Matrix commands differ from matrix functions in that they
	do not return a result. For this reason, these functions can
	be used in an expression and matrix commands cannot.

474 Matrices