If - x 1 1- 2 3 4- 1 1 1 - has no inverse- then x-

The correct option is C 1 We know that, #160;If Det =0 there is no inverse ⇒ D=x(3 4) 1(2 4)+1(2 3)=0 ⇒ x+2 1=0 ⇒ x=1 ...

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Definition of a Determinant

If [ x 1 1;...

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If $⎡ ⎢ ⎣ \begin{matrix} x & 1 & 1 2 & 3 & 4 1 & 1 & 1 \end{matrix} ⎤ ⎥ ⎦$ has no inverse, then $x =$

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