JEE Main 2025 Mathematics question
If the system of equations x + 2y - 3z = 2 2x + y + 5z = 5 14x + 3y + z = 33 has infinitely many solutions, then is equal to :
Answer: (4)
Solution
Setting D = 0 and D2 = 0 gives μ = 13 and λ = -1, so λ + μ = 12.