4.1.1 Matrices and Data − Practice
2. Identify entry b 13 .
1. Identify the dimensions of N .
− 2 5 1 0 3 8 −
− 8 11 15 29 1 7 16 4 − −
N
B
=
=
3. Evaluate G + 2 H if possible.
4. Evaluate 3 A − B if possible.
−
= B
5 0 3 9 2 2
3 1 0 2 0 5
− 4 2 5 1 3 0
A
= H
− 5 6 1 2 4 3
=
G
=
−
5. Evaluate 2( X − 3 Y ) if possible.
6. Evaluate 3(3 M + N ) if possible.
6 1 2 8 9 4 − −
0 2 3 8 5 1 −
3 2 0 1 1 3
1 2 3 4 5 6
X
Y
M
N
=
−
=
=
=
−
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