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If A is a 3x3 matrix such that det(A)=3, what is det(4A)

 May 14, 2022
 #1
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i figured this out i got 192

 May 14, 2022
 #3
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Yes, that is the correct answer.

MaxWong  May 14, 2022
 #2
avatar+9457 
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Use the following property of determinants directly:

 

Suppose A is a n by n matrix, and c is a real number. Then \(\det (cA) = c^n \det(A)\).

 May 14, 2022

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