Matrix Calculations (Matrix) - Casio fx-570ES PLUS User Manual

EQN Mode Calculation Examples
x y
+ 2 = 3, 2
N5(EQN) 1(a
x y z
– +
N5(EQN) 2(a
x x
2
+ +
N5(EQN) 3(aX
– 2 ' 2
x
2
N5(EQN) 3(aX
x x
3 2
– 2
N5(EQN) 4(aX

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
1 1
the following calculations:
2 1
+
1 1 –1 2
x y
+ 3 = 4
X + b
n
x y z
= 2, + – = 0, –
X + b
n
1 =- 1 = 1 = 2 =
1 = 1 =- 1 =0 =
- 1 = 1 = 1 = 4 =
3 = 0
B
4
2
+ bX + c = 0)
1 = 1 = 3 ' 4 ==
B
x
+ 2 = 0
2
+ bX + c = 0)
1 =- 2 ! 2 )= 2 ==
x
– + 2 = 0
3
+ bX
1 =- 2 =- 1 = 2 ==
2 1
to MatA and
1 1
2 –1
(MatA+MatB)
Y = c )
n n
1 = 2 = 3 =
2 = 3 = 4 =
=
c
x y z
+ + = 4
Y + c Z = d )
n n n
=
c
c
c
2
+ cX + d = 0)
c
c
2 –1
to MatB, and then perform
–1 2
2 1 2 –1
×
1 1 –1 2
E-29
(X =)
1
(X =)
2
(MatA×MatB),
Math Math
(X=) –1
(Y=) 2
Math Math
(X=) 1
(Y=) 2
(Z=) 3
' 2
1
+
– i
2 2
' 2
1
–
–
i
2 2
'
(X=)
2
(X =) –1
1
(X =) 2
2
(X =) 1
3