Evaluate the following limits. \[\lim _{x \rightarrow 0} \frac{\tan x+4 \tan 2 x-3 \tan 3 x}{x^{...

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Evaluate the following limits.
\[\lim _{x \rightarrow 0} \frac{\tan x+4 \tan 2 x-3 \tan 3 x}{x^{2} \tan x}\]
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