Answered

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Câu 1.HP Cho hàm số

 
4 2
y x m x     1 4
có đồ thị
C.

a) Với
m 3
, hàm số có
3 CT y  .

b) Với
m  0
, hàm số đã cho luôn đồng biến trên .

c)
C
có 3 điểm cực trị khi và chỉ khi
m 1.

d) Có 2 giá trị nguyên của
m
để đồ thị
C
có 3 điểm cực trị tạo thành tam giác vuông.

Sagot :

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