Cho cấp số nhân \(({{u}_{n}})\) có \({{u}_{1}}=2,\text{ }{{u}_{4}}=-54\). Tìm công bội \(q\).

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  The weather report says that ____________ ten inches of snow tomorrow.
  

• Choose the best answer for the following sentence:

  “ ___________ to finish his M.A. degree this year?”

  “Yes, or they will cut off his scholarship.”
   

• Choose the best answer for the following sentence:

  “I have to take a taxi home from the party last night.” “Oh, that’s too bad. You __________ in my car.”
   

• Choose the best answer for the following sentence:

  “Do you think it'll snow much longer?”

  “It _________ to end soon.”
   

• Choose the best answer for the following sentence:

  “Did you want me to give a message to David?”

  “Yes, would he pleas _____________ some bread at the store?”
   

• Choose the best answer for the following sentence:

  “Do you think the performers will be on time?”

  ''I don’t know yet. __________.''
   

• Choose the best answer for the following sentence:

  “Why are you so mad?”

  “You __________ me you weren’t coming to dinner. I waited for you for two hours.”
   

• Choose the best answer for the following sentence:

  “Why didn’t you come to yoga classes last night?”

  “Because I ___________ for my sister until 9.30.”
   

• Choose the best answer for the following sentence:

  “Mary, will you be at the party tonight?”

  “Yes, but I have so much homework to do that I really __________.”
   

• Choose the best answer for the following sentence:

  “What time do you expect your parents?”

  “They _________ come round 4.00.”