336 Chapter 19: Numeric Solver
19SOLVER.DOC TI-89/TI-92 Plus: Numeric Solver (English) Susan Gullord Revised: 02/23/01 1:16 PM Printed: 02/23/01 2:19 PM Page 336 of 10
Your most recently entered equations (up to 11 with the default
setting) are retained in memory. To recall one of these equations:
1. From the Numeric Solver
screen, press
‡
.
A dialog box displays the most
recently entered equation.
2. Select an equation.
¦ To select the displayed
equation, press
¸
.
¦
To select a different
equation, press
B
to display
a list. Then select the one
you want.
3. Press
¸
.
Because the number of equations that you can recall with
‡
Eqns
is
limited, a particular equation may not be retained indefinitely.
To store the current equation for future
use, save it to a variable.
1. From the Numeric Solver screen,
press
ƒ
and select
2:Save Copy As.
2. Specify a folder and a variable
name for the equation.
3. Press
¸
twice.
To open a previously saved equation
ariable:
1. From the Numeric Solver screen,
press
ƒ
and select
1:Open
.
2. Select the applicable folder and
equation variable.
3. Press
¸
.
Recalling Previously
Entered Equations
Tip: You can specify how
many equations are retained.
From the Numeric Solver,
press
ƒ
and select
9:Format
(
or use
TI
-
89:
¥Í
TI
-
92 Plus:
¥
F).
Then select
a number from 1 through 11.
Saving Equations
for Future Use
Note: An equation variable
has an
EXPR
data type, as
shown on the
MEMORY
and
VAR-LINK
screens.
Opening a Saved
Equation
Only unique equations are
listed. If you re-enter the
same equation 5 times, it
appears only once.
Variable eqn contains the current
equation; it always appears
alphabetically in the list.
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