Question: Ap calculus help? The figure above shows the graph of f’,the derivative of a function f The domain \nof f is the set of all real numbers x such that - 10 < x <10.\n(a) For what values of x does the graph of f have a horizontal tangent? \n(b) For what values of x in the interval (- 10, 10) does f have a relative maximum? \nJUSTIFY \n(c) For what values of x is the graph of f concave downward?

Answer: (a) the values when f'= 0.\n(b) look on the graph at all the points were f'=0 and see if the corresponding points on f are a max, min or point of infection (like on x^3)\n(c) when the values of the f'' are negative (the second derivative
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