24
0.25
x 1=
0.75
x 1=
i
R
⇔
I
R
⇔
I
D
D
A
r
•
Example 2:
To solve the equation
8
x
2
– 4
x
+ 5 = 0
(
x
=
0.25
±
0.75
i
)
(Degree?)
2
(
a
?)
8
=
(
b
?)
D
4
=
(
c
?)
5
=
(
x
1 = 0.25 + 0.75
i
)
]
(
x
2 = 0.25 – 0.75
i
)
Simultaneous Linear Equations with Two Unknowns:
a
1
x
+
b
1
y
=
c
1
a
2
x
+
b
2
y
=
c
2
Simultaneous Linear Equations with Three Unknowns:
a
1
x
+
b
1
y
+
c
1
z
=
d
1
a
2
x
+
b
2
y
+
c
2
z
=
d
2
a
3
x
+
b
3
y
+
c
3
z
=
d
3
Entering the EQN Mode displays the initial simultaneous
equation screen.
k
Simultaneous Equations
2 3
Unk now ns?
Use this screen to specify 2 or 3 as the number of un-
knowns, and input values for each of the coefficients.
0.
a 1?
Element value
Coefficient name
Arrow indicates
direction you
should scroll to
view other
elements.
