Cho hàm số  có bảng biến thiên như sau:   Hàm số  nghịch biến trên khoảng nào dưới đây?         

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Một số câu hỏi khác có thể bạn quan tâm.

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

  The city / locate / on the north bank / the Potomac River //.
  
  

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

  This capital / famous / the center / the federal government of the United States / and/ many / nation's monuments / museums //.
  
  

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

  Washington, D.C. / also / host / 172 foreign embassies / as well as / the headquarters / many international organizations//.
  
  

• Choose the best answer for the following sentence:

  Nobody could hear her ____________ she spoke too quietly.
  
  

• Choose the best answer for the following sentence:

  Don't __________ with him while he’s working.

   

• Choose the best answer for the following sentence:

  I've been looking for this book for months, and ____________ I have found it.

   

• Choose the best answer for the following sentence:

  One ____________ of their own house is that it has no garden.
  
  

• Choose the best answer for the following sentence:

  I have never _________ any experience of living in the country.
  
  

• Find a mistake in the four underlined parts of the sentence and correct it:

  The Japanese Covered Bridge built in the 16^th century is still well-preserving in Hoi An.

• Find a mistake in the four underlined parts of the sentence and correct it:

  The Tokyo Stock Exchange is Japan's large stock exchange, and second largest in the world.