If a&b are square matrix of order 3 such that |A|=-1 and |B|=3 FIND VALUE OF |3AB|.
If a&b are square matrix of order 3 such that |A|=-1 and |B|=3 FIND VALUE OF |3AB|.
Abhi mishra , 8 Years ago
Grade 12
Analytical Geometry> If a&b are square matrix of order 3 such ...
1 Answers
Alisha
|A| =-1 |B |= 3 { Given } To find |AB| ? |3AB | = |3(-1)(3)|= 9 As modulus is there so Don`t take tension of negative Sign. As it will became positive.
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