rational expression造句

• In theory of approximations , the classic methods of polynomial approximation for rational expression are various interpolations and operator approximations , such as lagrange interpolation , hermite interpolation and bernstein polynomial approximation
  在逼近论中，用多项式逼近有理式的经典的方法是各种插值与算子逼近方法，如lagrange插值、 hermite插值和bernstein多项式逼近等。