alleryFor a 2 by 2 matrix with A = 2B, det A is det B times:
ATwoo
BSixx
CNine
DFour
Answer & Solution
Correct answer: D. Four
1. Here k is 2 and the order n is 2.
2. The rule gives k to the power n.
3. That is 2 squared, which is 4.
4. So the answer is four.
_Source: syllabus Mathematics, Ch 4 'Determinants'_
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