intef.spad line 1 [edit on github]
This package provides functions for integration, limited integration, extended integration and the risch differential equation for elemntary functions.
lfextendedint(f, x, g) returns functions [h, c] such that dh/dx = f - cg, if (h, c) exist, "failed" otherwise.
lfintegrate(f, x) = g such that dg/dx = f.