engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Mathematics Determinants Application of Determinants
The system of linear equations x + y + z = 2, 2x + y - z = 3, 3x + 2y + kz = 4 has a unique solution if
1
k ≠ 0
2
-1 < k < 1
3
-2 < k < 2
4
k = 0