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17 December, 22:40

Let f (x) = sin (x) + icos (x). Show that |f (x) | = 1.

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  1. 18 December, 02:39
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    F (x) = sin (x) + icos (x)

    |f (x) | = sqrt (sin^2 (x) + cos^2 (x)) = sqrt (1) = 1

    Therefore, |f (x) | = 1
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