∫x^(2n-1)/(x^n+1)dx

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∫x^(2n-1)/(x^n+1)dx∫x^(2n-1)/(x^n+1)dx∫x^(2n-1)/(x^n+1)dx∫x^(2n-1)/(x^n+1)dx=∫[(x^2n-1)/x(x^n+1)+1/x

∫x^(2n-1)/(x^n+1)dx
∫x^(2n-1)/(x^n+1)dx

∫x^(2n-1)/(x^n+1)dx
∫x^(2n-1)/(x^n+1)dx = ∫[(x^2n-1)/x(x^n+1)+1/x(x^n+1)]dx= ∫[x^(n-1)-1/x+1/x(x^n+1)]dx
=∫[x^(n-1)-x^(n-1)/(x^n+1)]dx=x^n/n-ln(x^n+1)/n+C (其中C是任意常数)