HP 39GS hp 39gs_user's guide_English_E_HDPMG39AE13.pdf - Page 247
Swap Rows. Exchanges
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RANDMAT REDIM REPLACE SCALE SCALEADD SUB SWAPCOL SWAPROW Creates random matrix with a specified number of rows and columns and stores the result in name (name must be M0...M9). The entries will be integers ranging from -9 to 9. RANDMAT name;rows;columns: Redimensions the specified matrix or vector to size. For a matrix, size is a list of two integers {n1,n2}. For a vector, size is a list containing one integer {n}. REDIM name;size: Replaces portion of a matrix or vector stored in name with an object starting at position start. start for a matrix is a list containing two numbers; for a vector, it is a single number. Replace also works with lists and graphics. REPLACE name;start;object: Multiplies the specified row_number of the specified matrix by value. SCALE name;value;rownumber: Multiplies the row of the matrix name by value, then adds this result to the second specified row. SCALEADD name;value;row1;row2: Extracts a sub-object-a portion of a list, matrix, or graphic from object-and stores it into name. start and end are each specified using a list with two numbers for a matrix, a number for vector or lists, or an ordered pair, (X,Y), for graphics. SUB name;object;start;end: Swaps Columns. Exchanges column1 and column2 of the specified matrix. SWAPCOL name;column1;column2: Swap Rows. Exchanges row1 and row2 in the specified matrix. SWAPROW name;row1;row2: Programming 18-25