JEE Main 2015 Mathematics question
If is a matrix such that , then is equal to
Answer: (3)
Solution
Use two standard determinant facts for an matrix: , and . With ,
|5 adjA| = |adjA| = 125 |A|^{2}.
Setting this equa
See the full step-by-step solution
Create a free account to read the complete working (3 steps), and practise questions like this in a timed test.
Create a free account