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If A and B are 4x4 matrices, det(A) = -4, det(B) = 3, then (e) det(B^2) = ???,
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High School Teacher
Posted by tiburtius on April 28, 2013 at 5:56 AM (Answer #2)
(Level 1) Associate Educator, Expert
Note the solving for determinants is distributive:
I'm sorry. We are solving for `det(B^2)`
Using the same technique, `det(B^2) = det(BB)=det(B)det(B)=[det(B)]^2 = 3^2 = 9`
Sorry, got confused with the numbers.
Posted by mvcdc on April 28, 2013 at 11:14 AM (Answer #3)
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