Biết rằng ${\displaystyle \underset{0}{\overset{\ln a}{\int }}{\text{e}}^x\text{d}x}=1$ , khi đó giá trị của $a$ là:

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

      She _______ a sort of breakdown some years ago, and since then she ______ very shy.

   

• Choose the best answer for the following sentence:

  When the police __________ to the scene of the accident, both drivers __________ away.

   

• Choose the best answer for the following sentence:

  When I _________ home yesterday morning, my son ________ and my wife ___________ to work.

   

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

   Lan / apologize / come / for / late / meeting /.
  
  

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

  John is probably studying at the moment.

   

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

  He was possibly away as no one answered the phone.

   

   

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

  I / have / a dream / a tornado / come / our house

   

   

• Choose a word that has different stress pattern:

  finger              elbow                culture                remove

• Choose a word that has different stress pattern:

  movement                 finish                  except              party

• Choose a word that has different stress pattern:

  attendance                 behavior                  position                  protocol