(42S) Column Sums of a Matrix - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: HP Software Libraries (/forum-10.html) +--- Forum: General Software Library (/forum-13.html) +--- Thread: (42S) Column Sums of a Matrix (/thread-6527.html) |
(42S) Column Sums of a Matrix - Eddie W. Shore - 07-10-2016 01:36 AM HP 42S: Column Sums of a Matrix This could potentially had been a medium to long sized programs involving loops, but thanks to the powerful function RSUM (found in CATALOG-FUNC or executed by XEQ RSUM) this program will be quite short. RSUM is the row sum function, or the sum of each row of a matrix. Just put a matrix on the stack and run CSUM. When the program is finished, press [shift] [ 9 ] (MATRIX), {EDIT} to see the sums. Code: 00 {12-Byte Prgm} Test: MAT1 = [ [4, 3, 1], [5, 8, 2], [7, 6, 3]] Result: [16, 17, 6] |