HP Prime Graphing NW280AAABA Matrix functions, Argument conventions, TRN matrix, Trn ⎜, DETmatrix

Argument conventions

The matrix commands are designed to support programs that use matrices.

The matrix commands are listed in the Matrix category of the Commands menu in the Program Editor. They are also listed in the Catalog menu, one of the Toolbox menus.

Press Dand tap to display the commands catalog. The matrix functions are described in the following sections of this chapter; the matrix commands are described in the chapter Programming (see page 544).

•For row# or column#, supply the number of the row (counting from the top, starting with 1) or the number of the column (counting from the left, starting with 1).

•The argument matrix can refer to either a vector or a matrix.

Matrix functions

The matrix functions are available in the Matrix category on the Math menu: DSelect Matrix Select a function.

Transpose Transposes matrix. For a complex matrix, TRN finds the conjugate transpose.

TRN(matrix)
Example:
⎛		⎞
	1 2		returns	1 3
TRN⎜		⎟
⎝	3 4	⎠		2 4

Determinant Determinant of a square matrix.

DET(matrix)

Example:

DET⎛⎜ 1 2 ⎞⎟ returns –2⎝ 3 4 ⎠

Matrices 475