JEE Advanced Mathematics question
Let be a positive real number and
A = and B = .
If then is equal to [**Note:** denotes the adjoint of the matrix and denotes the largest integer .]
Answer: 4
Solution
In , gives third row ; then :
|A| = = -(2k+1)[(2k-1)(1-2k) - 8k] = (2k+1)[(2k- + 8k] =
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