changed: - \begin{axiom} f := x/(x^3-x+1) i := integrate(f, x) D(i, x) 23*%%F0^3 + %%F0 + 1 \end{axiom}
f := x/(x^3-x+1)
i := integrate(f, x)
D(i, x)
23*%%F0^3 + %%F0 + 1