JEE Main 2019 — Determinants Question with Solution
JEE Main 2019 (11 Jan Shift 1)
Question
If the system of linear equations
where, care non-zero real numbers, has more than onc solution, then
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
System of equations has more than one solution
for infinite solution
$\begin{aligned}
\Delta_{1} &=\left|\begin{array}{ccc}
a & 2 & 3 \\
b & -1 & 5 \\
c & -3 & 2
\end{array}\right|=a(13)+2(5 c-2 b)+3(-3 b+c) \\
&=13 a-13 b+13 c=0
\end{aligned}$
i.c,
or
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