Answer:
(i)
And B = [?1
2 1]1×3
and
Now
? (1)
Now, B?A?
From (1) and
(2), we get
(AB)? =
B?A?
Hence verified.
(ii)
and B = [1 5
7]1×3
A?= [0 1 2]1×3
and
Now
?.
(1)
Now,
From (1) and
(2), we get
(AB)? = B?A?
Hence verified.
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