Generalized Abel solver

A(f(x))=k(A(x))

A(x) = kN(Lk+c(logc((k-N(a)-Lk)cN)+(k(logc((k-N(a)-k)cN))-logc((k-N(a)-k)cN))(logf'(Lf)((f-N(x)-Lf)f'(Lf)N)-N))


Result: