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Place the cursor over the equals sign to find out why this equation is true. At the same time, the background of the equals sign will be highlighted.
\displaystyle{
\lim_{x \rightarrow 0} \frac{\sin x}{x}
\statusline{L'hospital's Rule}{\bghilight{#a00050}{\fontcolor{#00a000}{=}}}
\lim_{x \rightarrow 0} \frac{\cos x}{1} = 1
}
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