(a) Use a graph of f to give a rough estimate of the intervals of concavity and...
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(b) Use a graph of f to give better estimates.
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55. f(x) = cosx + cos 2x, 56. f(x) = x*(x - 2)* 0
55. f(x) = cosx + cos 2x, 56. f(x) = x*(x - 2)* 0
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55 fx cos x cos2x fx sinzsin 2x a b 2 0 A 2 TT 3 2 T fx cos x 2 cos 2x From the graph of f it see...View the full answer
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