∫dx/(x+1)^4/3*(x-1)^2/3=∫[(x-1)/(x+1)]^1/3*dx/(x^2-1),这一步怎么解
∫dx/(x+1)^4/3*(x-1)^2/3=∫[(x-1)/(x+1)]^1/3*dx/(x^2-1),这一步怎么解
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