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Nguyễn Thu Hằng
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0
2023-04-25 20:10:37
2023-04-25 20:09:58
2023-04-25 20:09:54
2023-04-25 20:09:49
2023-04-12 21:05:54
2023-04-12 21:01:17
2023-04-12 20:52:58
2023-04-11 23:18:20
Khi bán hết sản phẩm thì số tiền thu được là: (nghìn đồng).
Điều kiện để nhà sản xuất không bị lỗ là .
Xét hoặc .
Bảng xét dấu :
Ta có: .
Vậy nếu nhà sản xuất làm ra từ đến sản phẩm thì họ sẽ không bị lỗ.