JEE Advance - Mathematics (1980 - No. 14)

Find the solution set of the system $$$\matrix{ {x + 2y + z = 1;} \cr {2x - 3y - w = 2;} \cr {x \ge 0;\,y \ge 0;\,z \ge 0;\,w \ge 0.} \cr } $$$
x = 1, y = 0, z = 0, w = 0
x = 0, y = 1/2, z = 0, w = -2
x = 1, y = 1, z = -2, w = -3
x = 0, y = 0, z = 1, w = -2
There is no solution that satisfies all conditions.

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