JEE Main 2019 Mathematics question
If then A is:
- (A)invertible only if t = π
- (B)invertible for all t ∈ RCorrect
- (C)invertible only if
- (D)not invertible for any t ∈ R
Answer: (B)
Solution
|A| = for all t. (The first row is cut in the source; the official matrix is used.)
Question ID VK-010007