E-16
k
Editing the Elements of a Matrix
Press
A
j
2
(Edit) and then specify the name (A, B, or
C) of the matrix you want to edit to display a screen for
editing the elements of the matrix.
k
Matrix Addition, Subtraction, and
Multiplication
Use the procedures described below to add, subtract,
and multiply matrices.
•
Example:
To multiply Matrix A = by
Matrix B =
(Matrix A 3
2)
A
j
1
(Dim)
1
(A)
3
=
2
=
(Element input)
1
=
2
=
4
=
0
=
D
2
=
5
=
t
(Matrix B 2
3)
A
j
1
(Dim)
2
(B)
2
=
3
=
(Element input)
D
1
=
0
=
3
=
2
=
D
4
=
1
=
t
(MatA
MatB)
A
j
3
(Mat)
1
(A)
-
A
j
3
(Mat)
2
(B)
=
• An error occurs if you try to add, subtract matrices whose
dimensions are different from each other, or multiply a
matrix whose number of columns is different from that of
the matrix by which you are multiplying it.
k
Calculating the Scalar Product of a
Matrix
Use the procedure shown below to obtain the scalar
product (fixed multiple) of a matrix.
•
Example:
Multiply Matrix C =
by 3.
2 –1
–5 3
[
]
[
]
(
)
6 –3
–15 9
[
]
1 2
4 0
–2 5
[
]
( )
3 –8 5
–4
0 12
12 –20 –1
–1 0 3
2 –4 1
[
]
