Trong không gian $Oxyz$ , cho điểm $A\left(-1;2;3\right)$ . Tìm tọa độ điểm điểm $B$ đối xứng với điểm $A$ qua mặt phẳng $\left(Oyz\right)$ .

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Một số câu hỏi khác có thể bạn quan tâm.

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

  “Leave my house now or I’ll call the police!” shouted the lady to the man.
  
  

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

  He last had his eyes tested ten months ago.
  
  

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

  “You should have finished the report by now,” John told his secretary.
  
  

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

  “It’s too stuffy in this room, isn’t it?” said the guest.
  
  

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

  A very successful salesman, Mr. Smith often has more customers than he can handle.
  
  

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

  Tim is likely to fail if he takes the exam without studying.
  
  

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

  He looked so funny that I couldn’t help laughing.
  
  

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

  They bought a gift that was very expensive for their son.
  
  

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

  I found it difficult to communicate in English.
  
  

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

  A majority of the students in this college are from overseas.