The total values of the diagonal tensorial components of the (hyper)polarizability of (BN)4C10 in zero-frequency limit (λ =  nm) calculated by FF method (obtained by numerical integration of (hyper)polarizability density) listed in Table are very close to those by CPKS method in Tables and, which confirms the suitability of the chosen electric field strength (0.003 a.u.) to this work.