boost::math::chi_squared chisqdist(Tcopnu);

error LNK2019: unresolved external symbol "void __cdecl boost::assertion_failed_msg(char const *,char const *,char const *,char const *,long)" (?assertion_failed_msg@boost@@YAXPBD000J@Z) referenced in function "public: long double const & __thiscall boost::array<long double,171>::operator[](unsigned int)const " (??A?$array@O$0KL@@boost@@QBEABOI@Z)

boost/math/distributions/detail/generic_quantile.hpp
boost/math/tools/roots.hpp
boost/math/distributions/chi_squared.hpp