Cho hàm số. Hàm số  có bảng biến thiên như sau:   Bất phương trình  đúng với mọi  khi và chỉ khi.  

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose the correct sentence which is built from the words and phrases given:

  He/ try/ stop/ smoke/ he/ never succeed/ many times.
  
  

• Choose the correct sentence which is built from the words and phrases given:

  He/ promise/ send/ me/ postcard/ as soon as/ arrive/ Madrid.
  
  

• Choose the correct sentence which is built from the words and phrases given:

  Developing countries/ need/ do/ research/ find/ solutions/ agriculture/ problems.
  
  

• Choose the correct sentence which is built from the words and phrases given:

  She/ practise/ play/ tennis/ every day/ she/ want/ famous/ one day.
  
  

• Choose the correct sentence which is built from the words and phrases given:

  Never/ stop/ try/ you get/ solution/ problem.
  
  

• Choose the correct sentence which is built from the words and phrases given:

  New York/ most exciting/ city/ I / ever/ visit.
  
  

• Choose the correct sentence which is built from the words and phrases given:

  dangerous/ drive/ fast/ city/ rush hours.
  
  

• Choose the correct sentence which is built from the words and phrases given:

  If/ he/ come/ station/ earlier/ not miss/ train.
  
  

• Choose the correct sentence which is built from the words and phrases given:

  Mary says/ she / put/ higher class.
  
  

• Choose the correct sentence which is built from the words and phrases given:

  Would you/ talk/ something else?