∫[(x+sinx)/(1+cosx)]dx=(  )。A.xcot(x/2)+

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问题 ∫[(x+sinx)/(1+cosx)]dx=(  )。A.xcot(x/2)+CB.xtan(x/2)+CC.(xcotx)/2+CD.[xtan(x/2)]/2+C

选项 A.xcot(x/2)+C
B.xtan(x/2)+C
C.(xcotx)/2+C
D.[xtan(x/2)]/2+C

答案 B

解析
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