Maths-
General
Easy

Question

If f left parenthesis x right parenthesis k infinity to the power of 3 end exponent minus 9 x to the power of 2 end exponent plus 9 x plus 3 is monotonically increasing in each interval, then

  1. k less than 3    
  2. k less or equal than 3    
  3. k greater than 3    
  4. None of these    

The correct answer is: k greater than 3


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