Trong không gian Oxyz, cho mặt cầu và mặt phẳng . Tìm tất cả các giá trị của m để mặt phẳng (P) cắt mặt cầu (S) theo giao tuyến là một đường tròn có bán kính bằng 3.         

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Một số câu hỏi khác có thể bạn quan tâm.

• Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions:   

  “ Don’t forget to hand in the report, Pete !”, said Kate.         

• Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions:

  If it hadn’t been for the wind, the fire would never have spread so fast.          

• Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions:

  The gate was closed to stop the children running into the road.         

• Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions:   

  “ If I were you, I would go to the doctor.”, David said to Claudia.         

• Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions:

  The student was very bright. He could solve all the math problems.         

• Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions:   

  I spent a long time getting over the disappointment of losing the match.         

• Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions:  

  When I picked up my book I found that the cover had been torn.         

• Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions:   

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

• Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.

  Impressed as we were by the new cinema, we found it rather expensive.             

• Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions:  

  “What would you do if you were a billionaire?”, the man asked the woman.