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Matrices and Determinants question

2021 · 17 Mar · Shift 2 · Q34

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JEE Main
Mathematics
Matrices and Determinants
2021 · 17 Mar · Shift 2 · Q34

Matrices and Determinants question

2021 · 17 Mar · Shift 2 · Q34

JEE MainMathematicsMatrices and DeterminantsNumerical+4 / −1

Let

A = \left[ {\begin{matrix} a & b \\ c & d \\ \end{matrix} } \right]

and

B = \left[ {\begin{matrix} \alpha \\ \beta \\ \end{matrix} } \right] e \left[ {\begin{matrix} 0 \\ 0 \\ \end{matrix} } \right]

such that AB = B and a + d = 2021, then the value of ad

-

bc is equal to

\underline{\hspace{2cm}}

.

Numerical answer

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