Jump to content

Photo

cac bac làm xem nào!1


  • Please log in to reply
No replies to this topic

#1
frazier

frazier

    Trung sĩ

  • Thành viên
  • 107 posts
:ech 1) Cho x^{2} + y^{2} = 1. Chứng minh rằng x :sqrt{1 + y} + y :sqrt{1 + x} :ech -1

2) Cho a^{2} + b^{2} + c^{2} = 1 :ech k. Chứng minh rằng :
abc + k(1 + a + b + c + ab +bc + ca) :ech k

Edited by frazier, 17-07-2009 - 17:48.





1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users