Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Matrices and Determinants question

2023 · 29 Jan · Shift 1 · Q38
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Mathematics
  4. /Matrices and Determinants
  5. /2023 · 29 Jan · Shift 1 · Q38

Matrices and Determinants question

2023 · 29 Jan · Shift 1 · Q38

JEE MainMathematicsMatrices and DeterminantsMCQ+4 / −1
Consider the following system of equations αx+2y+z=12αx+3y+z=13x+αy+2z=β\alpha x+2y+z=12\alpha x+3y+z=13x+\alpha y+2z=\betaαx+2y+z=12αx+3y+z=13x+αy+2z=β for some α,β∈R\alpha,\beta\in \mathbb{R}α,β∈R. Then which of the following is NOT correct.
  1. A
    It has a solution for all αe−1\alpha e-1αe−1 and β=2\beta=2β=2
  2. B
    It has no solution if α=−1\alpha=-1α=−1 and βe2\beta e2βe2
  3. C
    It has no solution for α=−1\alpha=-1α=−1 and for all β∈R\beta \in \mathbb{R}β∈R
  4. D
    It has no solution for α=3\alpha=3α=3 and for all βe2\beta e2βe2
PreviousNext

More from Matrices and Determinants

  • Let A be a symmetric matrix such that ∣A∣=2 and [23​123​​]A=[1α​2β​]. If the…2023 · Numerical
  • Let the system of linear equations x+y+kz=22x+3y−z=13x+4y+2z=k have infinitely many solutions. Then the system (k+1)x+(2k−1)y=7(2k+1)x+(k+5)y=10 has :2023 · MCQ
  • For α,β∈R, suppose the system of linear equations ​x−y+z=52x+2y+αz=83x−y+4z=β​ has infinitely many solutions. Then α and β are…2023 · MCQ
  • For the system of linear equations x+y+z=6αx+βy+7z=3x+2y+3z=14 which of the following is NOT true ?2023 · MCQ
  • Let A=​100​0412​0−1−3​​. Then the sum of the diagonal elements of the matrix (A+I)11 is equal to :2023 · MCQ
  • The number of values of α for which the system of equations : x + y + z =αα x + 2 α y + 3z = − 1 x + 3 α y + 5z = 4 is inconsistent, is2022 · MCQ
  • Let the system of linear equations x + y + α z = 2 3x + y + z = 4 x + 2z = 1 have a unique solution (x ∗, y ∗, z ∗). If (α, x ∗), (y ∗, α) and (x ∗, − y ∗) are collinear points, then the…2022 · MCQ
  • Let S={(−10​ab​);a,b∈{1,2,3,....100}} and let Tn​={A∈S:An(n+1)=I}. Then the number of elements in n=1⋂100​Tn​…2022 · Numerical