Matrices and Determinants: JEE Main 2021 Mathematics question

JEE Main 2021 · 25 Feb, Evening shift · Q4462

JEE Main 202125 Feb, Evening shiftMathematicsMediumMatrices and Determinants245× since 2002

Let A be a 3

\times

3 matrix with det(A) = 4. Let R_i denote the i^th row of A. If a matrix B is obtained by performing the operation R₂

\to

2R₂ + 5R₃ on 2A, then det(B) is equal to :

JEE Main 2021 · 25 Feb, Evening shift · Q4462

JEE Main 202125 Feb, Evening shiftMathematicsMediumMatrices and Determinants245× since 2002

Let A be a 3

\times

3 matrix with det(A) = 4. Let R_i denote the i^th row of A. If a matrix B is obtained by performing the operation R₂

\to

2R₂ + 5R₃ on 2A, then det(B) is equal to :

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