Sets, Relations and Functions (Quiz)

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Q.1 Let f(x) = (x + 1)2 - 1, x ≥ 1
Statement I The set {x : f(x) = f-1(x)} = {0,-1}
Statement II f is a bijection
  Statement I is false, Statement II is true
  Statement I is true, Statement II is true;
  Statement I is true, Statement II is true, Statement II is not a correct explanation for Statement I.
  Statement I is true, Statement II is false