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5 January, 18:27

Find the intervals in which the function f given by

f (x) = sinx + cosx, o_x_2pi is strictly increasing or strictly decreasing

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  1. 5 January, 21:50
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    The function f (x) = sinx + cosx is strictly increasing on the interval [0, π/4) ∪ (5π/4, 2π] and is strictly decreasing on the interval (π/4, 5π/4).
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