JEE Main 2025 Mathematics question
Let A =
If det(adj(adj(3A))) = , m, n N, then m + n is equal to
Answer: (4)
Solution
Simplifying the determinant gives |A| = 8. |adj(adj(3A))| = |3A|^4 = ยท. So m+n = 24.
Let A =
If det(adj(adj(3A))) = , m, n N, then m + n is equal to
Simplifying the determinant gives |A| = 8. |adj(adj(3A))| = |3A|^4 = ยท. So m+n = 24.