Evaluate the following limits. lim_{xrightarrow0}frac{sin4x}{x}

Evaluate the following limits. $\underset{x\to 0}{lim}\frac{\mathrm{sin}4x}{x}$
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Concept:
$\underset{x\to 0}{lim}\frac{\mathrm{sin}x}{x}=1$
$\underset{x\to 0}{lim}\frac{\mathrm{sin}4x}{x}$
$=\underset{x\to 0}{lim}\frac{4\mathrm{sin}4x}{4x}$
$=4\underset{x\to 0}{lim}\frac{\mathrm{sin}4x}{4x}$
$=4\left(1\right)$
$=4$
Jeffrey Jordon