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![Toán 12: Trong không gian Oxyz, cho mặt cầu: (S): x^2+y^2+(z+1)^2 = 5. Có tất cả bao nhiêu điểm A(a;](https://1a-1791.com/video/fwe1/60/s8/1/0/w/S/F/0wSFx.qR4e-small-Ton-12-Trong-khng-gian-Oxyz.jpg)
Toán 12: Trong không gian Oxyz, cho mặt cầu: (S): x^2+y^2+(z+1)^2 = 5. Có tất cả bao nhiêu điểm A(a;
4 days ago
39
Trong không gian Oxyz, cho mặt cầu: (S): x^2+y^2+(z+1)^2 = 5. Có tất cả bao nhiêu điểm A(a;b;c) (a,b,c là các số nguyên) thuộc mặt phẳng (Oxy) sao cho có ít nhất hai tiếp tuyến của (S) đi qua A và hai tiếp tuyến đó vuông góc nhau?
#ToanLop12
#HinhHocKhongGIanOxyz
#CachGiai
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