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The extreme values of 4 c o s invisible function application open parentheses x to the power of 2 end exponent close parentheses c o s invisible function application open parentheses fraction numerator pi over denominator 3 end fraction plus x to the power of 2 end exponent close parentheses c o s invisible function application open parentheses fraction numerator pi over denominator 3 end fraction minus x to the power of 2 end exponent close parentheses over R are

  1. negative 11    
  2. negative 22    
  3. negative 33    
  4. negative 44    

The correct answer is: negative 11


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