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trambeauty12
2 năm trước
trong mặt phẳng toạ độ Oxy, cho đường thẳng (d): y = 2x-a+1 và Parabol (P): y = 1/2x^2. a) Tìm m để đường thẳng (d) đi qua điểm A (-1;3). b) Tìm m để (d) cắt (P) tại hai điểm phân biệt có toạ độ ( x1; y1) và ( x2; y2) sao cho x1.x2.( y1+ y2)+48=0.
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