JEE Main 2019 Mathematics question
If ; then for all , det(A) lies in the interval:
Answer: (A)
Solution
det A = 2 + 2 sinθ ∈ [2, 3). (The first row is cut in the source; the official matrix is used.)
If ; then for all , det(A) lies in the interval:
det A = 2 + 2 sinθ ∈ [2, 3). (The first row is cut in the source; the official matrix is used.)