Tìm tất cả những giá trị thực của để bất phương trình sau có nghiệm với mọi thuộc tập xác định. .  

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose a word that has different stress pattern:

  official                    customer                    procedure                    policeman

• Choose a word that has different stress pattern:

  champion                    recite                   female                    general

• Choose the best answer for the following sentence:

  He ___________ on seeing the manager of the hotel.
   

• Choose the best answer for the following sentence:

  We were _______________ of buying a house in the suburb.
   

• Choose the best answer for the following sentence:

  His prarents prevented him _____________ staying up too late.
   

• Choose the best answer for the following sentence:

  A maximum ____________ for each activity is 20 points.
   

• Choose the best answer for the following sentence:

  To win the contest, you must complete five activities ___________.
   

• Choose the best answer for the following sentence:

  This price reduction is due to ____________ among suppliers.
  

• Choose one sentence that has the same meaning as the root one:

  I'm sorry I forgot your birthday, ” said Dave to Julia.
  
  

• Choose the word that has the underlined part pronounced differently from the rest:

  glean                  creature                     clear                      queen