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Chapter 2: Operating the Calculator 51
02OPER DOC TI
-
89/TI
-
92 Plus: O
p
erating the TI
-
89/TI
-
92 Plus (English) Susan Gullord Revised: 02/23/01 1:06 PM Printed: 02/23/01 2:11 PM Page 51 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
p
4.2
¸
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.
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