IPMAT Indore 2019 (MCQ) - If inverse of the matrix [arraycc2 & -0.5 \\ -1 & xarray] is [arrayll1 & 1 \\ 2 & 4 array], then the value of x is | PYQs + Solutions | AfterBoards
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IPMAT Indore 2019

Modern Math
>
Matrices & Determinants

Easy

If inverse of the matrix [2−0.5−1x]\left[\begin{array}{cc}2 & -0.5 \\ -1 & x\end{array}\right] is [1124]\left[\begin{array}{ll}1 & 1 \\ 2 & 4 \end{array}\right], then the value of xx is

Correct Option: 1

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