Threaded Mode | Linear Mode

**rprosperi** · 05-26-2015, 10:51 PM

(05-26-2015 09:18 PM)Thomas Klemm Wrote:
(05-26-2015 09:04 PM)AnalogJoe Wrote: For example I had to mess around several minutes to figure out how to enter matrices since the manual doesn't tell you how to do that.

MED: Matrix Editor

This description is from matrixedit.wp34s:

Code:

/* * Interactive editor for matrices. * Start the editor with a matrix descriptor in X. * Use the arrow keys to navigate: * up/down: previous/next column * f-up/f-down: previous/next row * Type a digit to enter a number. This will suspend * the progrom. R/S will enter X at the current row/column. * XEQ RCL restores the present value to X if you decide * not to change the cell. Press R/S to continue. * * Some hot keys: * A will start over at (1,1). * When used outside the editor you will need to specifiy * a new descriptor first. * B (labeled 1/x) will call M[^-1] on the matrix. * C continues at the last position. * D computes and displays the determinant. R/S or C continue. * * We need a few registers for internal use and therefore * set the stacksize to 4 to free registers A to D. * Press <- to restore the mode and exit the editor. * Double precision mode will always be reset! * * Register usage: * A - Matrix descriptor * B - Current register * D - Old setup mode * I, J - Row and column * K last key pressed * * Flags: * A - Controls big "=" sign * 00 - Shift state * * Fixed labels: * A, 11 - Start over with new matrix ('A'gain) * B, 12 - Compute the inverse ('1/x') * C - Continue with current matrix ('C'ontinue) * 14, D - Compute the determinant ('D'eterminant) * 22 - [RCL] recalls current matrix element * 24 - [f] toggles navigation from horizontal to vertical * 31 - [ENTER^] (same as recall) * 35 - [<-] Backspace to exit the editor * 51 - [^] Navigation up/left * 61 - [v] Navigation down/right */

Stolen from [WP-34S] Calculations With Complex Matrices

Cheers
Thomas

Who would have guessed? The best documentation really is in the source code...