Engineering Board Exam Reviewer · Determinants · easy

If (A)=5 and (B)=3, find (AB).

1. 15
2. 8
3. 53
4. 2

Answer

A. 15

Solution

(AB)= (A) (B)=5(3)=15.

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1. Evaluate the determinant of the upper triangular matrix bmatrix3&7&2\0&5&1\0&0&4 bmatrix.
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