Give the intervals where f(x) is concave up. (enter your answer using interval notation. if an answer does not exist, enter dn

1 answer:

6 0

Concave up is U-shaped.
There will be a inflection/critical point f'(x) =0 then a negative slope f'(x) = neg then another inflection/critical point f'(x) =0 at the bottom of the U-shape then a positive slope to last inflection/critical point. The interval for the Concave Up shape is the first and last inflection points.

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