HP 39g hp 39g & 40g_user's manual_English_E_pdfbpia5212.pdf - Page 177

To display a matrix To display one element To create a matrix in HOME • In the Matrix catalog ( matrix name and press MATRIX), highlight the . • In HOME, enter the name of the matrix variable and press . In HOME, enter matrixname(row,column). For example, if M2 is [[3,4],[5,6]], then M2(1,2) returns 4. 1. Enter the matrix in the edit line. Start and end the matrix and each row with square brackets (the shifted and keys). 2. Separate each element and each row with a comma. Example: [[1,2],[3,4]]. 3. Press to enter and display the matrix. The left screen below shows the matrix [[2.5,729],[16,2]] being stored into M5. The screen on the right shows the vector [66,33,11] being stored into M6. Note that you can enter an expression (like 5/2) for an element of the matrix, and it will be evaluated. To store one element In HOME, enter: value matrixname(row,column) For example, to change the element in the first row and second column of M5 to 728, then display the resulting matrix: 728 M5 1 2 M5 . An attempt to store an element to a row or column beyond the size of the matrix results in an error message. Matrices 12-5