∫dx/x^2(1-x^2)

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∫dx/x^2(1-x^2)∫dx/x^2(1-x^2)∫dx/x^2(1-x^2)∫dx/x^2(1-x^2)=∫1/x^2dx+∫1/(1-x^2)dx=-1/x+0.5*∫1/(1-x)+1/(

∫dx/x^2(1-x^2)
∫dx/x^2(1-x^2)

∫dx/x^2(1-x^2)
∫ dx/x^2(1-x^2)
=∫1/x^2 dx +∫ 1/(1-x^2) dx
= -1/x + 0.5*∫ 1/(1-x) +1/(1+x) dx
= -1/x -0.5ln|1-x| +0.5ln|1+x| +C,C为常数

∫[dx/(e^x(1+e^2x)]dx ∫1+2x/x(1+x)*dx∫1+2x/x(1+x) * dx ∫(x-1)^2dx, ∫x^1/2dx ∫dx/x^2(1-x^2) ∫dx/x^2(1+x^2) ∫X^2/1-x^2 dx. ∫X^2/1-x^2 dx. ∫1/x^2+x+1dx ∫1/(x^2+x+1)dx ∫ (x+arctanx)/(1+x^2) dx ∫（x^2+1/x^4)dx ∫2 -1|x²-x|dx ∫x^2/1+X dx. ∫ xe^x/(1+x)^2 dx ∫dx/[(1-x)x^2] ∫ x/(1+X^2)dx= ∫(2x)/(1+x²)dx