JEE Main 2019 — Maths solution | Fundamenthol

JEE Main2019Maths

Q.

The system of linear equations.

x + y + z = 2

2x + 3y + 2z = 5

2x + 3y + (a²– 1)z = a + 1

A
has infinitely many solutions for a = 4
B
is inconsistent when $∣ a ∣$ = $3$
C
is inconsistent when a = 4
D
has a unique solution for $∣ a ∣$ = $3$

Solution

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