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Kieuchinh
2 năm trước
Cho hàm số y=f(x)= (x-1)/(x+2) (C). Viết phương trình tiếp tuyến với đồ thị hàm số đã cho biết a, tiếp tuyến song song với đường thẳng -3x+y=2020 b, tiếp tuyến vuông góc với đường thẳng (1/3).x - y = 2020
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