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Matrices and Determinants · 2021 · 31 Aug · Shift 2

2 Mathematics questions from this JEE Main paper
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Matrices and Determinants · 2021 · 31 Aug · Shift 2

2 Mathematics questions from this JEE Main paper

  1. Q22.If α+β+γ = 2 π, then the system of equations x + (cos γ)y + (cos β)z = 0 (cos γ)x + y + (cos α)z = 0 (cos β)x + (cos α)y + z = 0 has :
    Mathematics · Matrices and Determinants · MCQ
  2. Q40.The number of elements in the set {A=(a0​bd​):a,b,d∈{−1,0,1}and(I−A)3=I−A3}, where I is 2 × 2 identity matrix, is :
    Mathematics · Matrices and Determinants · Numerical