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Question
Find the points of inflection and discuss the concavity of the function.
A) inflection point at
; concave upward on 
; concave downward on 
B) inflection point at
; concave downward on ; concave upward on C) inflection point at
; concave upward on 
; concave downward on 
D) inflection point at
; concave downward on ; concave upward on E) none of the above
Answer
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