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Guest Viewing Topic:   Xác định vị trí của điểm $D$ để diện tích tam giác $DEF$ nhỏ nhất 22-05-2024 - 18:56 No options available
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Guest Viewing Topic:   Tìm m để d cắt P tại 2 điểm phân biệt A, B sao cho tam giác OAB bằng 1 22-05-2024 - 18:56 No options available
Guest Viewing Topic:   Tìm $\lim x_n$, biết $x_{n}=\sqrt{1+x_{n-1}}$ 22-05-2024 - 18:56 No options available
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Guest Viewing Topic:   $(a+b^2)(b+c^2)(c+a^2)\leq 13$ 22-05-2024 - 18:56 No options available
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