Consider the following function. f(x) = 2 sin(x) + 2 cos(x), [0, 2n] Find f'(x). f'(x) Find f"(x). f"(x) = Find the points of inflection of the graph of the function. (If an answer does not exist, enter DNE.) (х, у) %3D (smaller x-value) (х, у) %3D (larger x-value) Describe the concavity. (Enter your answer using interval notation. If an answer does not exist, enter DNE.) concave upward concave downward

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