Determining Concavity In Exercises 5-14, determine the open intervals on which the graph of the function is concave upward or concave downward.
To calculate: The open intervals for which the provided function is concave upwards or concave downwards.
The function .
For a function f that is twice differentiable on an open interval I:
If for all x in I, the function f is concave upwards on I and if for all x in I, the function f is concave downwards on I.
Now differentiate the provided function twice.
This implies that the second derivative can never be zero
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