Which of the following is true about the graph of f(x) = 2 sin(x) +...

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Which of the following is true about the graph of f(x) = 2 sin(x) + 3 sin(x) + 2 on the interval [0, ?]?a) f(x) has a local minimum at the point (?,7).b) f(x) has points of inflection at the points (?/4,2?2+2) and (3?/4, 2?2+2).c) f(x) is concave down on the interval (0, ?).d) f(x) is concave up on the interval (0, ?).e) f(x) is increasing on the interval (?/2, ?).

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