∫arctan[(x-1)/(x+1)]dxrt

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∫arctan[(x-1)/(x+1)]dxrt
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∫arctan[(x-1)/(x+1)]dxrt
∫arctan[(x-1)/(x+1)]dx
rt

∫arctan[(x-1)/(x+1)]dxrt
同样问题已经回答很多次了,请看图!