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Question

The equation left parenthesis Cos space p minus 1 right parenthesis x squared plus left parenthesis Cos space p right parenthesis x plus Sin space p equals 0 where χ is a variable with real roots, then the interval of p may be any one of the following

  1. left parenthesis 0 comma 2 pi right parenthesis
  2. left parenthesis negative pi comma 0 right parenthesis
  3. open parentheses negative pi over 2 comma pi over 2 close parentheses
  4. left parenthesis 0 comma pi right parenthesis

The correct answer is: left parenthesis 0 comma pi right parenthesis

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