How do I determine whether there is a upward concavity or downward concavity?
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Originally Posted by xxju1anxx How do I determine whether there is a upward concavity or downward concavity? Use the second derivative test. This will help: Pauls Online Notes : Calculus I - The Shape of a Graph, Part II
Originally Posted by xxju1anxx How do I determine whether there is a upward concavity or downward concavity? If the function is double derivable over an interval then second derivative positive ==> concave upwards, and 2nd derivative negative ==> downwards. If there is no 2nd derivative then by inspection, I believe... Tonio
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