... M(2y;y). Suy ra d(M,di) = —^;d(M,d2) = ^^ Theo gia thiet ta co: d(M,di) = 2d(M,d2) <^ 3y + 3 ^2ly-4 Phuvng plidp gidi Toiin Hiith hoc theo chuyen dc- Nguyen Phii Klidnh, Nguyen ... B(0;3),C(4;5). Chti i/ Ngoai each tren, ta c6 the giai theo each khac nhu sau: Tjnh tien he true toa dp Oxy ve he tuc XAY theo vec to OA, ta c6 cong thuc 'x = X + 3 ' ... Vay diem M(xo;y(,) e (E) ã = 1 va <a Yo <b, Phumtg phcip giiii Toan Hhih hoc theo chuyen tie- Nguyen Phu Khdnh, Nguyen Tat Thu 3. Tinh chat v>d hlnh dang cua elip:...