User Manual

E-29
EQN Mode Calculation Examples
x + 2 y = 3, 2 x + 3 y = 4
N5(EQN) 1(a
n
X + b
n
Y = c
n
)
1 = 2 = 3 =
2 = 3 = 4 =
=
(X=) –1
c (Y=) 2
x – y + z = 2, x + y – z = 0, – x + y + z = 4
N5(EQN) 2(a
n
X + b
n
Y + c
n
Z = d
n
)
1 =- 1 = 1 = 2 =
1 = 1 =- 1 =0 =
- 1 = 1 = 1 = 4 =
=
(X=) 1
c (Y=) 2
c (Z=) 3
x
2
+ x +
4
3
= 0 B
N5(EQN) 3(aX
2
+ bX + c = 0)
1 = 1 = 3 ' 4 ==
(X
1
=)
1
2
+
–
'
2
2
i
c
(X
2
=)
1
2
–
–
'
2
2
i
x
2
–
2
'
2
x + 2 = 0 B
N5(EQN) 3(aX
2
+ bX + c = 0)
1 =- 2 ! 2 )= 2 ==
(X=)
'
2
x
3
– 2 x
2
– x + 2 = 0
N5(EQN) 4(aX
3
+ bX
2
+ cX + d = 0)
1 =- 2 =- 1 = 2 ==
(X
1
=) –1
c (X
2
=) 2
c (X
3
=) 1
Matrix Calculations (MATRIX)
Use the MATRIX Mode to perform calculations involving matrices of up to 3
rows by 3 columns. To perform a matrix calculation, you first assign data to
special matrix variables (MatA, MatB, MatC), and then use the variables in
the calculation as shown in the example below.
To assign
2 1
1 1
to MatA and
2 –1
–1 2
to MatB, and then perform
the following calculations:
×
2 1
1 1
2 –1
–1 2
(MatA×MatB),
+
2 1
1 1
2 –1
–1 2
(MatA+MatB)
MathMath
MathMath
11