Matrix « Next Oldest | Next Newest »

 ▼ Richard Berler Member Posts: 109 Threads: 38 Joined: Dec 2012 08-18-2013, 12:42 PM How do I enter matrices, dimension them, designate a result matrix? I can do this on the 15C, but it's not obvious to me how to accomplish this on the 34s! Thanks! ▼ Walter B Posting Freak Posts: 4,587 Threads: 105 Joined: Jul 2005 08-18-2013, 01:13 PM Please see pp. 35f of TFM. Continue reading (as indicated) on p. 144 and p. 101 for LINEQS. d;-) Edited: 18 Aug 2013, 1:16 p.m. Thomas Klemm Senior Member Posts: 735 Threads: 34 Joined: May 2007 08-18-2013, 06:17 PM Without reading the aforementioned manual: a matrix descriptor consistst of three numbers: the register i where to start storing the elements, the number of rows r and the number of columns c. These three numbers are merged into one using the format i.rrcc. So for instance 5.0203 is a matrix descriptor for a 2x3 matrix whose elements are stored in register 05 and the following. This is similar to the numbers we use for ISG and DSE. The simplest way to enter a matrix is using the program MED. Use up- and down-arrows to navigate through the elements. But you can just as well store the numbers in the correct registers. Say you want to find the inverse of [[1 2][3 4]]: ```1 STO 00 2 STO 01 3 STO 02 4 STO 03 0.0202 M-1 RCL 00 -> -2 RCL 01 -> 1 RCL 02 -> 1.5 RCL 03 -> -0.5 ``` Compared to the HP-15C you have to make sure the matrix descriptors don't specify overlapping regions. But you are not restricted to use just five matrix descriptors. Kind regards Thomas ▼ Paul Dale Posting Freak Posts: 3,229 Threads: 42 Joined: Jul 2006 08-18-2013, 06:24 PM If the column count is missing, the matrix defaults to square. Thus the descriptor here could be just 0.02. - Pauli

 Possibly Related Threads... Thread Author Replies Views Last Post AFTER HP-Prime update, Shift+Matrix CRASHES Joseph Ec 3 1,375 12-06-2013, 11:06 AM Last Post: Joseph Ec HP Prime Matrix TERRIBLE bug and question uklo 19 3,389 11-25-2013, 12:10 PM Last Post: Mic HP Prime: editing a matrix Alberto Candel 6 1,664 11-20-2013, 06:26 PM Last Post: Helge Gabert Absolute Value and Matrix BruceTTT 5 1,512 11-11-2013, 11:52 PM Last Post: Walter B WP-34S Matrix operations with routine-local registers? Tom Grydeland 1 853 09-04-2013, 10:46 AM Last Post: Marcus von Cube, Germany Matrix Characteristic Polynomial - Reloaded. Ángel Martin 12 2,421 08-22-2013, 05:33 PM Last Post: Thomas Klemm Advantage/CCD Matrix Challenge Ángel Martin 1 852 08-09-2013, 06:22 PM Last Post: Thomas Klemm [HP -Prime CAS] List, Matrix, Vector as one Array? CompSystems 0 704 07-26-2013, 05:22 PM Last Post: CompSystems ELO - Domination Matrix Kimberly Thompson 0 599 06-21-2013, 05:34 PM Last Post: Kimberly Thompson Strings inside matrix editor on 50g Chris Smith 3 1,147 05-22-2013, 04:04 PM Last Post: Chris Smith

Forum Jump: