arctan(χ-lnχ.sinχ)=_______.

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问题 arctan(χ-lnχ.sinχ)=_______.

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答案[*]

解析 χ-lnχ.sinχ=χ(1-sinχ),由于χ→+∞时,→0,sinχ有界,故.sinχ→0,χ-lnχ.sinχ→+∞,于是arctan(χ-lnχ.sinχ)=
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