Find the intervals of concavity from the derivative graph

The video tutorial explains how to find intervals where a function is concave up by analyzing the first and second derivatives. It emphasizes the importance of the second derivative being positive and relates this to the slope of the first derivative. The tutorial identifies specific intervals where the second derivative is positive, indicating concavity.

How can we determine when the second derivative is positive?

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What does it mean for a function to be concave up?

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