Question: Function y= f(x ) derivative is day. dyz = - 2 ( x + 4) x (x - 7 ) Determine / find the intervals

Function y= f(x ) derivative is day. dyz = - 2 ( x + 4) x (x - 7 ) Determine / find the intervals which y=f ( x ) is going to be concave upward . Determine / find in interval notation

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