Question
Suppose that the second derivative of the function $y=f(x)$ is $$y^{\prime \prime}=(x+1)(x-2)$$ For what $x$ -values does the graph of $f$ have an inflection point?
Step 1
This happens when the second derivative is equal to zero. So, we set the second derivative equal to zero and solve for $x$: $$(x+1)(x-2)=0$$ Show more…
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