How do you solve the following equation:
\begin{align*}\sqrt{2017 + \sqrt{2017 - x}} &= x\end{align*}
I tried squaring it twice, but then I am left with quadratic equation that I can not solve.
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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