Texas Instruments TI-86 User Manual
Page 222
210
Chapter 15: Equation Solving
15EQSOLV.DOC TI-86, Chap 15, US English Bob Fedorisko Revised: 02/13/01 2:34 PM Printed: 02/13/01 3:04 PM Page 210 of 12
15EQSOLV.DOC TI-86, Chap 15, US English Bob Fedorisko Revised: 02/13/01 2:34 PM Printed: 02/13/01 3:04 PM Page 210 of 12
15EQSOLV.DOC TI-86, Chap 15, US English Bob Fedorisko Revised: 02/13/01 2:34 PM Printed: 02/13/01 3:04 PM Page 210 of 12
Storing Equation Coefficients and Results to Variables
♦
To store coefficients
a
1,1
;
a
1,2
;...;
a
n
,
n
to an n×n matrix, select
STOa
.
♦
To store solutions
b
1
,b
2
,...,
b
n
to a vector of dimension n, select
STOb
.
♦
To store the results
x
1
,
x
2
,...,
x
n
to a vector of dimension n, select
STOx
.
To store a single value on the coefficients-entry screen or result screen, follow these steps.
ᕡ Move the cursor to the = sign next to the
coefficient or result you want to store.
#
ᕢ Display the variable
Name=
prompt.
ALPHA-lock is on.
ᕣ Enter the variable to which you want to
store the value.
ᕤ Store the value. The variable name
becomes an item on the
VARS
REAL
screen or
VARS
CPLX
screen.
X
ã
R
д г
E
д г
S
д г
U
д г
L
д
г
T
ä 1
2
b
To return to the coefficients-entry screen, where you can edit coefficients and calculate
new solutions, select
COEFS
from the
SIMULT
RESULT
menu.
To switch to the coefficients-
entry screen, select COEFS
from the SIMULT RESULT
menu.
To solve equations
simultaneously on the home
screen or in a program,
select simult( from the
CATALOG
.