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Matrices and Determinants question

2024 · 27 Jan · Shift 1 · Q57
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Matrices and Determinants question

2024 · 27 Jan · Shift 1 · Q57

JEE MainMathematicsMatrices and DeterminantsNumerical+4 / −1
Let A=[201110101],B=[B1,B2,B3]A=\left[\begin{array}{lll}2 & 0 & 1 \\ 1 & 1 & 0 \\ 1 & 0 & 1\end{array}\right], B=\left[B_1, B_2, B_3\right]A=​211​010​101​​,B=[B1​,B2​,B3​], where B1,B2,B3B_1, B_2, B_3B1​,B2​,B3​ are column matrics, and AB1=[100],AB2=[230],AB3=[321]\mathrm{AB}_1=\left[\begin{array}{l} 1 \\ 0 \\ 0 \end{array}\right], \mathrm{AB}_2=\left[\begin{array}{l} 2 \\ 3 \\ 0 \end{array}\right], \quad \mathrm{AB}_3=\left[\begin{array}{l} 3 \\ 2 \\ 1 \end{array}\right]AB1​=​100​​,AB2​=​230​​,AB3​=​321​​ If α=∣B∣\alpha=|B|α=∣B∣ and β\betaβ is the sum of all the diagonal elements of BBB, then α3+β3\alpha^3+\beta^3α3+β3 is equal to ‾\underline{\hspace{2cm}}​.
Numerical answer
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