Reusing A Previous Entry Or The Last Answer - Texas Instruments TI-89 Manual Book

Reusing a Previous Entry or the Last Answer

Reusing the
Expression on the
Entry Line
Tip: Reexecuting an entry
"as is" is useful for iterative
calculations that involve
variables.
You can reuse a previous entry by reexecuting the entry "as is"
or by editing the entry and then reexecuting it. You can also
reuse the last calculated answer by inserting it into a new
expression.
When you press
¸
leaves that expression on the entry line and highlights it. You can
type over the entry, or you can reuse it as necessary.
For example, using a variable, find the square of
As shown below, set the initial variable value and then enter the
variable expression. Next, reenter to increment the variable and
calculate the square.
On the TI.89: On the TI.92 Plus:
0 § 0 §
2 ™ N U M
N U M
¸ ¸
N U M j « 1 § N U M « 1 §
2 ™ N U M
N U M
2 Ë N U M Z 2 2 Ë N U M Z 2
¸ ¸
¸ ¸ ¸ ¸
to evaluate an expression, the
Chapter 2: Operating the Calculator
TI-89 / TI-92 Plus
1 , 2 , 3 , etc.
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