) 中图学技术大荸学系 University of Science and Technology of China DEPARTMENT OF MATHEMATICS 些性质 N(x)=Ln(x) 性质2 x"的系数一样 八x…x=∑ (x1-x0)…(x1-x21)(x-x1)…(x1-xn)数 学 系 University of Science and Technology of China DEPARTMENT OF MATHEMATICS ⚫ 一些性质 = − − − − + −  =  = n i i i i i i i n i n n n n x x x x x x x x f x f x x x N x L x 0 0 1 1 0 ( ) ( )( ) ( ) ( ) [ , , ] ( ) ( )    的系数一样 性质2