Texas Instruments TITANIUM TI-89 User Manual

Page 220

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220

Recalling the Last Answer

Each time you evaluate an expression, the TI-89 Titanium 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.

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.

Note:

Refer to

ans( )

in the Technical Reference module.

1. Find the area.

1.7

p 4.2 ¸

2. Find the yield.

147

e 2 ± ¸

If the entry line contains the last
entry,

2 `

recalls this entry.

If the entry line is edited or cleared,

2 `

recalls this entry.

Variable ans(1) is
inserted, and its value
is used in the
calculation.