Saturday, 5 November 2016

real analysis - Show that there is no rational number whose square is $2$ or $8$

Show that there is no rational number whose square is $2$ or $8$

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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}...