xét http://dientuvietnam...mimetex.cgi?P(x)=x^n+a_{n-1}x^{n-1}+...+a_{0} .CM:
max http://dientuvietnam...tex.cgi?P(x_{j}) http://dientuvietnam.net/cgi-bin/mimetex.cgi?n!/2^n
0 http://dientuvietnam...n/mimetex.cgi?j n
Edited by gauss2, 05-09-2006 - 16:07.