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###### Find Ine Intarval on whlch the graph &t f is cocave upward. Ine Interval on which the groph & {i5 corcave downward and ho coordinates ol the Iniecon points .fl) x +122'_ Tr + [Answerthe inlervawhich ine graph of f is concave upNardIhe interval on which the grapn offis concave dowmtardand Ihe X, coordinates of the infectionpoints:_

Find Ine Intarval on whlch the graph &t f is cocave upward. Ine Interval on which the groph & {i5 corcave downward and ho coordinates ol the Iniecon points . fl) x +122'_ Tr + [ Answer the inlerva which ine graph of f is concave upNard Ihe interval on which the grapn offis concave dowmtard and Ihe X, coordinates of the infection points:_

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