Function

For discussing Olympiad Level Algebra (and Inequality) problems
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yo79
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Joined:Mon Feb 04, 2013 1:01 am
Function

Unread post by yo79 » Mon Mar 04, 2013 2:49 am

Let $f: \mathbb{R} \rightarrow \mathbb{R}$ be a function with $f(x)=cos(x)+sin(x \sqrt{2} ), \forall x \in \mathbb{R} $. Find Imf (the image of f) and prove that f isn't periodic.
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