in Linear Algebra edited by
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9 votes
9 votes

If $\begin{vmatrix} 3 && 3 \\ x && 5 \end{vmatrix} =3$ then the value of $x$ is

  1. $2$
  2. $3$
  3. $4$
  4. $5$
in Linear Algebra edited by
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2 Answers

11 votes
11 votes
Best answer
$5*3-3*x=3$

$\implies3x=15-3$

$\implies 3 x=12$

$\implies x=4$

Hence, Option (C) is the correct choice.
edited by
1 vote
1 vote
X = 4

 

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