Javascript Disabled Detected

You currently have javascript disabled. Several functions may not work. Please re-enable javascript to access full functionality.

Member Since 27-12-2017
Offline Last Active 29-07-2018 - 19:34

24-07-2018 - 15:48

Định hướng: Từ giả thiết => (x+y)^2 + y^2 = 1

=> đặt ẩn phụ là x

02-07-2018 - 17:48

cho x^2+2xy+2y^2=1 tính x^4+y^4+(x+y)^4

Community Forum Software by IP.Board
Licensed to: Diễn đàn Toán học

ngocchinh1