MHT CET 2025 Mathematics question
If , where are cofactors of respectively, then the value of
Answer: (A)
Solution
The sum of products of the elements of any row with their own cofactors equals the determinant (expansion along that row). So (expansion along row 2). Expanding along the third row:
See the full step-by-step solution
Create a free account to read the complete working, and practise questions like this in a timed test.
Create a free account