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Question

0 less or equal than a less or equal than 3 comma 0 less or equal than b less or equal than 3 and the equation x squared plus 4 plus 3 cos space left parenthesis a x plus b right parenthesis equals 2 x has at least one solution then the value of (a+b)

  1. pi over 2
  2. pi over 4
  3. pi over 3
  4. pi

The correct answer is: pi

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