Determinant Properties
Algebra
Level
3
If A is a 3*3 matrix where |A| = 5, then what is the value of |5 |
The answer is 25.
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1 solution
| 5 A − 1 | = 5 3 * | A − 1 | = 5 3 / |A| = 5 3 / 5 = 5 2 = 25