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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;
2 months ago
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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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