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QUESTION
Determine where the function is concave upward and where it is concave downward. (If you need to enter - or , type -INFINITY or INFINITY.
Determine where the function is concave upward and where it is concave downward. (If you need to enter -∞ or ∞, type -INFINITY or INFINITY. If there is no interval where the function is concave up or down, enter NONE in those blanks.)
