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3 years ago

If A is a square matrix of order 2, then det(-3A) is *

Mathematics

2 answers:

Vsevolod [243]3 years ago

6 0

Answer:

c. 9 det A

Step-by-step explanation:

Given the following data;

Since A is a square matrix of order 2, we know that n = 2

K = 3

For any scalar k;

∣kA∣ = k^{n} ∣A∣

<em>Substituting into the equation;</em>

∣-3A∣ = -3²∣A∣

Simplifying, we have;

∣-3A∣ = 9∣A∣

= 9 detA

<em>Therefore, det (-3A) = 9 detA</em>

Angelina_Jolie [31]3 years ago

4 0

Answer:

free points :D

Step-by-step explanation:

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