HP 40gs hp 40gs_user's guide_English_E_HDPMSG40E07A.pdf - Page 319

hp40g+.book Page 5 Friday, December 9, 2005 1:03 AM Key Meaning (Continued) Moves to the first row, last row, first column, or last column respectively. 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. Matrices 18-5