Question

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

Answer 1

|2A| = 2×7 =14 ..it's jst that simple

Answer 2

Answer:

56

Step-by-step explanation:

we know that if A be a determinant of order 3×3,then |kA| is equal to k³|A|

now, 2³ |7| [ since |A|=7, k=2 and order is 3×3]

= 8×7

= 56