Texas Instruments TI-82 User Manual - Page 137

Editing a Matrix Element In editing context, an edit cursor is active on the bottom line, and you can change the value of the current matrix element. 1. Use the cursor-movement keys to move the cursor to the matrix element you want to change. 2. Switch to editing context by pressing Í, ', or an entry key. 3. Change the value of the matrix element. You may enter an expression (which is evaluated when you leave the editing context) for the value. Note: You can press ', followed by Í to restore the value at the rectangular cursor if you make a mistake. 4. Press Í, }, or † to move to another element. Editing Context Keys | or ~ † or } Í ' Any entry character y [INS] { Moves the edit cursor within the value. Stores the value on the bottom line to the matrix element; switches to viewing context and moves the rectangular cursor within the column. Stores the value on the bottom line to the matrix element; switches to viewing context. Rectangular cursor moves to the next element. Clears the value on the bottom line. Copies the character to the location of the edit cursor on the bottom line. Activates insert cursor. Deletes the character under the edit cursor on the bottom line. Matrices 10-7