1,cho x,y,zϵ[-1,1] va x+y+z=0 chung minh 13√x2+xy+y2+13√y2+yz+z2+13√z2+xz+x2≥1

2, cho xyz ϵ[1,3] tim min P=36xyz+2yxz+zxy

Câu hỏi này được treo giải thưởng trị giá +2000 vỏ sò bởi danielpadillawacky@gmail.com, đã hết hạn vào lúc 24-01-16 11:47 AM

Cần trả +1,000vỏ sò để xem nội dung lời giải này
anh đang định đăng, th này -_- –  ๖ۣۜDevilღ 23-01-16 09:29 PM

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