Texas Instruments TI-82 User Manual - Page 38

Last Entry When you press Í on the Home screen to evaluate an expression or execute an instruction, the expression or instruction is stored in a storage area called Last Entry, which you can recall. When you turn the TI.82 off, Last Entry is retained in memory. Using Last Entry You can recall Last Entry and edit it from the Home screen or any editor. Press y ãENTRYä. On the Home screen or a numeric editor, the current line is cleared and the Last Entry is copied to the line. The cursor is positioned at the end of the entry. In the program editor, the Last Entry is inserted at the cursor location. Because the TI.82 updates the Last Entry storage area only when Í is pressed, you can recall the previous entry even if you have begun entering the next expression. However, when you recall Last Entry, it replaces what you have typed.  5Ã7 Í y ãENTRYä Multiple Entries on a Line To enter more than one expression or instruction on a line, separate them with a colon (:). They are all stored together in Last Entry (page 1.14). If the previous entry contained more than one expression or instruction, separated with a colon (page 1.7), they all are recalled. You can recall all entries on a line, edit any of them, and then execute all of them.  Using the equation A=pr2, use trial and error to find the radius of a circle that covers 200 square centimeters. Use 8 as your first guess. 8 ¿ ƒ R y ã:ä y ãpä ƒ R ¡ Í y ãENTRYä y | 7 y ãINSä .95 Í Continue until the answer is as accurate as you want. 1-14 Operating the TI.82