设z=∫x+yxye-t2dt,求

admin2019-09-04  29

问题 设z=∫x+yxye-t2dt,求

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答案[*]=ye-x2y2-e-(x+y)2. [*]=e-x2y2-2x2y2e-x2y2+2(x+y)e-(x+y)2

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