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blue_night731
2 năm trước
Bài 2: Trong mặt phẳng tọa độ Oxy cho đường thẳng d: 5x + 2 y - 1 = 0 và điểm A(0;-1) . a) Tìm ảnh của d và A qua phép vị tự tâm 0 ti số k=3 ? b) Tìm ảnh của d và A qua phép quay tâm O góc 90° ? mong mợi người giúp đỡ
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