hp40g+.book Page 3 Friday, December 9, 2005 1:03 AM

2.Highlight the matrix variable name you want to use

and press .

3.Select the type of matrix to create.

–For a vector (one-dimensional array), select Real vector or Complex vector. Certain operations (+, –,CROSS) do not recognize a one-dimensional matrix as a vector, so this selection is important.

–For a matrix (two-dimensional array), select Real matrix or Complex matrix.

4.For each element in the matrix, type a number or an

expression, and press . (The expression may not contain symbolic variable names.)

For complex numbers, enter each number in complex form; that is, (a, b), where a is the real part and b is the imaginary part. You must include the parentheses and the comma.

5.Use the cursor keys to move to a different row or column. You can change the direction of the highlight

bar by pressing . The menu key toggles between the following three options:

– specifies that the cursor moves to the cell

below the current cell when you press .

– specifies that the cursor moves to the cell to the right of the current cell when you press .

– specifies that the cursor stays in the current

cell when you press .

6.When done, press MATRIX to see the Matrix

catalog, or press to return to HOME. The matrix entries are automatically stored.

A matrix is listed with two dimensions, even if it is 3×1. A vector is listed with the number of elements, such as 3.

Matrices

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