Show that there does not exist a function $f:\mathbb N\to \mathbb N$ which satisfya) $f(2) = 3$b) $f(mn) = f(m)\cdot f(n)$ for all $m,n \in \mathbb N$c) $f(m) < f(n)$ whenever $m < n$
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}...
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