Identify the value of ∫0∞1x2+x+1dx\int_0^{\infty} \frac{1}{x^2 + x + 1} dx∫0∞x2+x+11dx.
2π/332\pi / 3\sqrt{3}2π/33
π/33\pi / 3\sqrt{3}π/33
π/3\pi / \sqrt{3}π/3
2π/32\pi / \sqrt{3}2π/3