Giải phương trình sau:
$\sqrt{x}=1-2x+2x^2-x^{3}$
Bài gửi trên diễn đàn mấy ngày mà chưa ai làm được nè:$\sqrt{x}=1-2x+2x^2-x^{3}$
Started By Longtunhientoan2k, 12-09-2015 - 18:28
phương trình
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#2
Posted 12-09-2015 - 18:53
Zaraki
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- Phó Quản lý Toán Cao cấp
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- 4273 posts
PQT
Đã có tại đây. 
Discovery is a child’s privilege. I mean the small child, the child who is not afraid to be wrong, to look silly, to not be serious, and to act differently from everyone else. He is also not afraid that the things he is interested in are in bad taste or turn out to be different from his expectations, from what they should be, or rather he is not afraid of what they actually are. He ignores the silent and flawless consensus that is part of the air we breathe – the consensus of all the people who are, or are reputed to be, reasonable.
Grothendieck, Récoltes et Semailles (“Crops and Seeds”).
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