JEE Main 2019 Mathematics question
The system of linear equations x + y + z = 2, 2x + 3y + 2z = 5,
Answer: (C)
Solution
Δ = ; for , equations 2 and 3 have the same LHS but a + 1 ≠ 5.
The system of linear equations x + y + z = 2, 2x + 3y + 2z = 5,
Δ = ; for , equations 2 and 3 have the same LHS but a + 1 ≠ 5.