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2.曲线 =(x)^3 与直线 y=x 所围图形的面积等于 ()-|||-A. (int )_(-1)^1(x-(x)^3)dx B. (int )_(-1)^1((x)^3-x)dx-|||-C. (int )_(0)^1(x-(x)^3)dx D. (int )_(-1)^0(x-(x)^3)dx

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