จงหาผลคูณในแต่ละข้อ โดยเติมเมทริกซ์ให้ถูกต้อง
1) A = [2 4], B =
จะได้
AB
[ 2(1) + 4(3) ]
=
[
2) A = [3 6 - 2], B = 0 จะได้ AB
[ 3]+ 6 + (-2)O]
5
[.
]
AB
[ 2)+ 5)
23 + 5 ]
[.
- ]
[4 2]
4) A =
|3 5
| 4(_)+ 2(.) 4(.
|3.) + 5(.) 3) +
+2(.
ะได้ AB =
[1 0 5]
(2 3 4
[0 -1]
B = 6 - 2 จะได้ AB =
7 - 8
[1(.) + 0(.) + 5(.) ()+0+5(7
2)+3() + 4(..) 2.) + 3(.) + 4(.)
5) A =
[4 2]
6) A =
3 5
[1 0]
จะได้ AB
88 88* 6 *