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Cho hàm số y=((m+1) x^2-2mx+6m)/(x-1) a) Với m=-1 thì hàm số đồng biến trên (2;+∞)
8 months ago
53
Cho hàm số y=((m+1) x^2-2mx+6m)/(x-1)
a) Với m=-1 thì hàm số đồng biến trên (2;+∞)
b) Với m=0 thì hàm số nghịch biến trên (1;+∞)
c) Hàm số đồng biến trên mỗi khoảng xác định khi và chỉ khi m∈[a;b].Khi đó,a+5b=0
d) Hàm số có hai điểm cực trị khi và chỉ khi m∈(-1;-1/5)
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