Friday, October 18, 2019

limits - $lim_{xrightarrow 0} frac{sin(sin x)}{x}$



Can someone suggest how to solve this limit?


$$\lim_{x\to 0}\frac{\sin(\sin x)}{x}$$


If I substitute $y=\sin x$ then $\sin(\sin x)=\sin y$ while $x=\arcsin y$. Then the limit becomes $$\lim_{y\to 0}\frac{\sin y}{\arcsin y}$$


but this form is more complicated than the first one...


Answer



Hint multiply top and bottom by $\sin x$ and break into a product of two limits.


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