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TI-83 Plus Operating the TI-83 Plus Silver Edition 36
For the equation A=
p
r
2
, 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
ƒ
[
:
]
y
B
ƒ
R
¡
Í
y
[
y
|
7
y
6
Ë
95
Í
Continue until the answer is as accurate as you want.
Clearing ENTRY
Clear Entries
(Chapter 18) clears all data that the TI-83 Plus is holding in
the
ENTRY
storage area.
Using Ans in an Expression
When an expression is evaluated successfully from the home screen or
from a program, the TI-83 Plus stores the answer to a storage area
called
Ans
(last answer).
Ans
may be a real or complex number, a list, a
matrix, or a string. When you turn off the TI-83 Plus, the value in
Ans
is
retained in memory.