Question

let A be a 3×3 determinant and | A | = 7 . find the value of | 2A |​

Answer 1

Answer:

Given A is a square matrix of order 3

then we know ∣2A∣=2

3

∣A∣

=8∣A∣

given ∣A∣=4

then ∣2A∣=8∣A∣

=8×4

=32

Hence ∣2A∣=32.

Step-by-step explanation:

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