8 special functions for your non-elementary integration needs, as seen on WolframAlpha! Shop non-elementary t-shirts: 1. Error function erf(x) 2. Imaginary error function erfi(x) 3. Exponential integral function Ei(x) 4. Logarithmic integral function li(x) very important in number theory/prime numbers 5. Sine and Cosine integrals Si(x) and Ci(x) 6. Fresnel's integral S(x) and C(x), @blackpenredpen