Tất cả các giá trị của m để hàm số đồng biến trên khoảng  là:

Tìm tất cả các giá trị của m để hàm số đồng biến trên  .

Có bao nhiêu giá trị nguyên của tham số m để hàm số  nghịch biến trên  ℝ

A. 1

B. 5

C. 0

D. 4

Cho hàm số . Tìm tất cả các giá trị của tham số m để hàm số y = f ( x )  có 5 điểm cực trị.

Cho hàm số bậc ba y = f ( x )  có đồ thị như hình vẽ bên. Tìm tham số m để hàm số y = f ( x ) + m  có ba điểm cực trị?

1. Jane owns a shop. She owns a restaurant. (both ....... and) 
..................................................................................................................
2. Helen likes cats. Mary likes cats. ( both ........... and) 
......................................................................................................................
3. She’s at the office. She’s at the airport. (either ............. or) 
.........................................................................................................................
4. Paul’s at home. Paul’s at the gym. (either .................... or) 
....................................................................................................................
5. Chris didn’t have time to take a holiday. Sheila didn’t have time to take a holiday.(neither .... nor) ......................................................................................................................
6. David doesn’t play tennis. David doesn’t play table-tennis. (neither ......... nor) 
...................................................................................................................
7. Nam’s handsome. Nam’s intelligent. (not only ................ but also ) 
.......................................................................................................................
8. Mai plays the guitar well. Mai dances beautifully. (not only ......... but also) 
.....................................................................................................................
9. You can have fish for dinner. You can have chicken for dinner. (both ............. and) 
......................................................................................................................... 
10. They came late. They left early. (not only ................. but also) 
................................................................................................................................
11. Goats provide milk for cheese. Goats provide wool for clothing. (both ...... and) 
....................................................................................................................
12. She’s French. She’s Swiss. (either ............. or) 
.........................................................................................................................
13. David can’t play tennis. David can’t play football. (neither ............... nor) 
......................................................................................................................
14. The black jacket didn’t fit her. The white jacket didn’t fit her. (neither .......... nor) 
....................................................................................................................... 
15. She’s tired. She’s hungry. (Not only ............... but also) 
.........................................................................................................................
1. We can see the film tonight. We can see the film tomorrow night. (either ............. or) …..........................................................................................
2. It was a very boring film and it was very long too. (both ...... and)
......................................................................................................................
3. Ali has studied not only in the United States but also in Europe. (both ...... and)
.......................................................................................................................
4. Dan was a newcomer, and so was Jim. (both ...... and)
......................................................................................................................
5. Mary went to London and Kate did, too. (both ...... and)
......................................................................................................................
6. Peter was a football player and his brother was, too. (both ...... and)
........................................................................................................................
7. Dan came from Thailand and Chow came from Thailand. (both ...... and)
.........................................................................................................................
8. Young people normally like only music but also sports. (both ...... and)
.........................................................................................................................
9. She is not only beautiful but also graceful. (both ...... and)
........................................................................................................................
10. My mother likes tea and my father does, too. (both ...... and)
......................................................................................................................
11. Yom is my older brother and Peter is, too. (both ...... and)
.......................................................................................................................
12. You are both funny and witty. (not only ................. but also)
.........................................................................................................................
13. She can enjoy a good meal and she can go fishing on the lake. (not only ................. but also)
....................................................................................................................
14. They ate lamb chops and fish. (not only ................. but also)
.........................................................................................................................
15. The underground is quick and cheap. (not only ................. but also)
.........................................................................................................................

Hàm số nào trong các hàm số sau đây có một nguyên hàm bằng cos 2 x ?

Cho hàm số y = f(x) liên tục trên các khoảng - ∞ ; 0 và 0 ; + ∞ có bảng biến thiên như sau

Tìm m để phương trình f(x) = m có 4 nghiệm phân biệt.

A.  .

B.  .

C.  .

D.  .

Cho hàm số y=f(x) liên tục trên R thỏa mãn ∫ f ( x ) d x = e - 2018 x + C . Khẳng định nào sau đây là đúng?