9 JEE Main 2019 Matrices previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2019 previous-year questions from the Matrices chapter of Mathematics. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Matrices chapter hub.
The total number of matrices A = 0 2 y 1 2 x y - 1 2 x - y 1 ,   x ,   y ∈ R ,   x ≠ y for w…
If B = 5 2 α 1 0 2 1 α 3 - 1 is the inverse of a 3 × 3 matix A , then the sum of all values of α fo…
Let P = 1 0 0 3 1 0 9 3 1 and Q = q i j be two 3 × 3   matrices such that Q - P 5 = I 3 . Then q 21 + q 31 q…
Let A= (arrayccc0 & 2 q & r \ p & q & -r \ p & -q & rarray ). If AAT=I₃, then |p| is:
If A = e t e - t c o s   t e - t sin ⁡   t e t - e - t cos ⁡ t - e - t sin ⁡ t - e - t sin…
If A = c o s θ - s i n θ s i n θ c o s θ , then the matrix A - 50 when θ = π 12 , is equa…
Let A = cos α - sin α sin α cos α ,   a ∈ R   such that A 32 = 0 - 1 1 0 . Then, a…
If A is a symmetric matrix and B is skew- symmetric matrix such that   A + B = 2 3 5 - 1 , then A B is equal to:
If 1 1 0 1 1 2 0 1 1 3 0 1 … . 1 n - 1 0 1 = 1 78 0 1 , then the inverse of 1 n 0 1 is: