JEE PYQ: Matrices And Determinants Question 75
Question 75 - 2019 (09 Jan Shift 1)
The system of linear equations $x + y + z = 2$, $2x + 3y + 2z = 5$, $2x + 3y + (a^2 - 1)z = a + 1$
(1) is inconsistent when $a = 4$
(2) has a unique solution for $|a| = \sqrt{3}$
(3) has infinitely many solutions for $a = 4$
(4) is inconsistent when $|a| = \sqrt{3}$