3. Let's consider the function f(x) = 2 + 2 sin(x) on the interval 0 < x< 2n. Algebraically determine any intervals where f is concave down, and any values of x where f has an inflection point. Note: you should complete this problem without using your calculator at allI. Based on my work above, f is concave down on the interval(s) and has inflection point(s) at x = Page 2 of 2

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