Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Let A be a matrix of order 3x3 and det
Text Solution
Verified by ExpertsThe correct answer is:
A
|(det ) adj (5 adj )|
= |2adj (5 adj (A 3 )) |
= 2 3 |adj (5 adj (A 3 )||
= 2 3 |5adj(A 3 )| 2
= 2 3 (5 3 .|adj(a)|)
=2 3 .(5 3 .|adj(A 3 )|) 2
= 2 3 .5 6 |adjA 3 | 2
= 2 3 . 5 6 ((|A| 3 ) 2 ) 2
= 2 3 .5 6 .2 12 = 2 15 x 5 6
= 2 9 x 10 6
= 512x 10 6 .
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