四道积分题目(1)积分:(0,1)lnx/(1-x)dxps:上限1,下限0(2)连加号(n=1->无穷)1/[2^n(2n-1)](3)连加号:(n=1->无穷)ln(2+1/n)/根号[(3n-2)(3n+2)]的收敛性!(4)连加号:(n=1->无穷)n^2(x^n+1/x^n)/e^n判断其在[1/2,2]是不是一致收

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