Teaching DSSSB TGT Mock Test 2025 Engineering Mathematics Linear Algebra Systems of Linear Equations
Find the values of a and b if the equations have a unique solution.
2x + 4y + 5z = 6
2x + 5y + 6z = 7
2x + 5y + (a+2) z = (b + 2)
1
a = 4, b = 5
2
a = 4, b ≠ 5
3
a ≠ 4, b ∈ R
4
a ∈ R, b = 5