Question

arctanx/[x(1+xx)]的不定积分

Answer 1

1/2*log(2)*atan(x)-1/4*i*dilog(1/2+1/2*i*x)+1/8*i*log(1+i*x)^2+1/2*i*dilog(1+i*x)+1/4*i*dilog(1/2-1/2*i*x)-1/8*i*log(1-i*x)^2-1/2*i*dilog(1-i*x)