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\lim\limits_{x \rightarrow a}\{\mathrm{f}(\mathrm{x})\}^{\mathrm{n}}\qquad =\left\{\lim\limits_{x \rightarrow a} \mathrm{f}(\mathrm{x})\right\}^{\mathrm{n}} \qquad \qquad =\mathrm{L}^{\mathrm{n}}