engineering recuitment GATE ECE 2023-24 Test Series Engineering Mathematics Linear Algebra System of Linear Equations
The following system of equations
x1 + x2 + 2x3 = 1
x1 + 2x2 + 3x3 = 2
x1 + 4x2 + ax3 = 4
has a unique solution. The only possible value(s) for a is/are
1
0
2
either 0 or 1
3
one of 0, 1 or -1
4
any real number other than 5.