Evaluate the limits: \( \operatorname{Lt}_{x \rightarrow 0}\left(\cot ^{2} x-\frac{1}{x^{2}}\rig...

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Evaluate the
limits:
\( \operatorname{Lt}_{x \rightarrow 0}\left(\cot ^{2} x-\frac{1}{x^{2}}\right) \)
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