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JEE Main 2019 · 12 Jan · Shift II

JEE Main 2019 Mathematics question on Three Dimensional Geometry

Let SS be the set of all real values of λ\lambda such that a plane passing through the points (−λ2,1,1)(-\lambda^2, 1, 1), (1,−λ2,1)(1, -\lambda^2, 1), (1,1,−λ2)(1, 1, -\lambda^2) also passes through the point (−1,−1,1)(-1, -1, 1). Then SS is equal to
  1. A.
    {3,−3}\{\sqrt{3}, -\sqrt{3}\}
  2. B.
    {3,−3}\{3, -3\}
  3. C.
    {1,−1}\{1, -1\}
  4. D.
    {3}\{\sqrt{3}\}
Show answer

Correct option: A

[JEE Main 2019 · 12 Jan · Shift II]

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