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  • 27-11-2022
  • Mathematics
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Cho các ma trận A=⎡⎣⎢21−14a3⎤⎦⎥,B=⎡⎣⎢1−29021⎤⎦⎥. Phần tử nằm ở vị trí dòng 2 cột 1 của ma trận BTA là:

a.
Không tồn tại

b.
-2a+31

c.
-9

d.
1

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