Wednesday 16 January 2013

modular arithmetic - Is modulus a periodic function?

Is taking a mod of something, like 12 mod 2 (which is 0), a periodic function? If not, what kind of function is it and can it be classified as such?

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real analysis - How to find $lim_{hrightarrow 0}frac{sin(ha)}{h}$

How to find $\lim_{h\rightarrow 0}\frac{\sin(ha)}{h}$ without lhopital rule? I know when I use lhopital I easy get $$ \lim_{h\rightarrow 0}...