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E-16
kEditing 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.
kMatrix 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.
kCalculating 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
[
]
12
4 0
–2 5
[ ]
( )
3–85
–4 0 12
12–20 –1
–1 0 3
2–4 1
[ ]