Solution
Let A be an n × n matrix and c be a scalar then:
det (cA) = $$c^n\ \det\ \left(A\right)$$
det (2A) = $$2^4\ \det\ \left(A\right)$$ = 192
$$\det\ \left(A\right)=\ \frac{192}{2^4}\ =\ \frac{192}{16}\ =\ 12$$
12 Answer
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