∫[x+e^(arctanx)/ (1+x^2) ]dx=
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∫[x+e^(arctanx)/ (1+x^2) ]dx=
∫[x+e^(arctanx)/ (1+x^2) ]dx=
∫[x+e^(arctanx)/ (1+x^2) ]dx=
∫[x+e^(arctanx)/ (1+x^2) ]dx=
∫[x+e^(arctanx)/ (1+x^2) ]dx=
∫[x+e^(arctanx)/ (1+x^2) ]dx=