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tim quy tich diem N

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#1
kuku

kuku

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Trong he toa do Oxyz cho diem A(1,0,0) ,B(0,2,0) ,C(0,0,3).Điem M di dong € mp(ABC),diem N€ tia OM sao cho OM.ON=1.
Tim quy tich diem N.




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