: Cho
A =
2 1 0
2 3 −4
!
, B =
1 0 −3
−...
Mathematics, 15.12.2021 14:00 connermichaela
: Cho
A =
2 1 0
2 3 −4
!
, B =
1 0 −3
−2 1 4
0 −2 7
, C =
−1 −2
0 9
2 0
.
Tính
a) −2A + 3C
T
.
b) AB.
Answers: 2
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