χsin(χ-t)2dt=_______.

admin2020-03-10  22

问题 χsin(χ-t)2dt=_______.

选项

答案0χsinu2du+χsinχ2

解析 由∫0χχsin(χ-t)2dt=χ∫0χsin(χ-t)2dtχ∫0χsinu2du,得
    χsin(χ-t)2dt=(χ∫0χsinu2du)=∫0χsinu2du+χsinχ2
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