question_answer

\[\left[ \sum\limits_{n=1}^{10}{{}}\int\limits_{-2n-1}^{2n}{si{{n}^{27}}\,x\,dx} \right]+\,\,\left[ \sum\limits_{n=1}^{10}{{}}\int\limits_{2n}^{2n+1}{si{{n}^{27}}\,x\,dx} \right]\] equals

Answer:

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