## Related questions with answers

Question

Use a graph of f’’ to give better estimates.

$f(x)=cosx+1/2cos2x, 0≤x≤2π$

Solution

VerifiedStep 1

1 of 5$\text{\color{#c34632}$f(x)$ is concave up when $f''(x)>0$ and concave down when $f''(x)<0$}$

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