HP 40gs hp 40gs_user's guide_English_E_HDPMSG40E07A.pdf - Page 316

hp40g+.book Page 2 Friday, December 9, 2005 1:03 AM Creating and storing matrices You can create, edit, delete, send, and receive matrices in the Matrix catalog. To open the Matrix catalog, press MATRIX. You can also create and store matrices-named or unnamed--in HOME. For example, the command: POLYROOT([1,0,-1,0])XM1 stores the root of the complex vector of length 3 into the M1 variable. M1 now contains the three roots of x3 - x = 0 Matrix Catalog keys The table below lists the operations of the menu keys in the Matrix Catalog, as well as the use of Delete ( ) and Clear ( CLEAR). Key CLEAR or Meaning Opens the highlighted matrix for editing. Prompts for a matrix type, then opens an empty matrix with the highlighted name. Transmits the highlighted matrix to another HP 40gs or a disk drive. See. Receives a matrix from another HP 40gs or a disk drive. See . Clears the highlighted matrix. Clears all matrices. Moves to the end or the beginning of the catalog. To create a matrix in the Matrix Catalog 1. Press MATRIX to open the Matrix Catalog. The Matrix catalog lists the 10 available matrix variables, M0 to M9. 18-2 Matrices