This is a definite integral. The specific endpoints might allow substantial simplifications that obscure the anti-derivative in question.
This is similar to the way that $\int_{-\infty}^\infty exp(-x^2) dx = \sqrt \pi$. The answer is a constant that doesn't give you any information about the function erf(x).
This is similar to the way that $\int_{-\infty}^\infty exp(-x^2) dx = \sqrt \pi$. The answer is a constant that doesn't give you any information about the function erf(x).