Texas Instruments TI-89, TI-92

Chapter 2: Operating the Calculator 51

02OPERDOC TI

89/TI

92Plus: O

eratingthe TI

89/TI

92Plus (English) SusanGullord Revised:02/23/01 1:06 PM Printed:02/23/01 2:11 PM Page51 of 44

Each time you evaluate an expression, the TI-89 / TI-92 Plus stores the

answer to the variable ans(1). To insert this variable in the entry line,

press 2±

For example, calculate the area of a garden plot that is 1.7 meters by

4.2 meters. Then calculate the yield per square meter if the plot

produces a total of 147 tomatoes.

1. Find the area.

1.7 p4.2 ¸

2. Find the yield.

147 e2±¸

Just as ans(1) always contains the last answer, ans(2), ans(3), etc.,

also contain previous answers. For example, ans(2) contains the

next-to-last answer.

Recalling the Last

Answer

Note: Refer to ans() in

Appendix A.

Variable ans(1) is

inserted, and its value is

used in the calculation.