Consider the continuous function f: R →R, the graph shown below, if we know that a,b,c x1, x2 , X3 are real numbers different from zero, (0,c) is a turning point , the zeros from f are x1, x2 and x3 the critic values of the domain are a and b b Consider the statements about f" and f' based on the graph 1- f' is positive in ]b, x3[ 2- f"is positive in x = b Which statement is true A- Both are true B- Just 2 C- Just 1 D- Both false

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