engineering recuitment GATE ME 2023-24 Test Series Engineering Mathematics Linear Algebra Systems of Linear Equations
The simultaneous equations are given as follows:
2x + ay + z = 20
x + 3y + 4z = b
x + 2y + 3z = c
If the above equation has a unique solution then which of the following is/are correct about the value of a, b and c?
1
a ≠ -1
2
a ≠ ± 1
3
b can take any value
4
c can take any value except 1