Tích phân $\int\limits_{0}^{3\pi }{{{x}^{3}}{{e}^{{{x}^{4}}}}dx}$ bằng

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  You will become ill _________ you stop working so hard.
   

• Choose the best answer for the following sentence:

  She leaves her bedroom window open, ___________.
   

• Choose the best answer for the following sentence:

  There was no one in the house, but the _____________ of the meal lay on the table.
   

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

  My sister is looking for a new job because her present one is very bored.

• Choose the best answer for the following sentence:

  ____________ people go to football matches now' than twenty years ago.
   

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

  My friend is still optimistic however many difficulties she has to overcome.

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

  Would you mind waiting outside the office?
  
  

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

  sperm                   percentage                      fertilizer                      diversity
  
  

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

  actual                               individual                            careful                          casual

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

  concern                            conserve                     water                 prefer