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Mathematics, 24.07.2021 14:00 melissa9882
Cho 2 đường thẳng d1: 3x-y-3=0 và d2: x+y = 0. Phép đối xứng tâm I biến d1 thành d1': 3x-y+1 = 0 và biến d2 thành d2': x+y-6 = 0 là gì ?
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Cho 2 đường thẳng d1: 3x-y-3=0 và d2: x+y = 0. Phép đối xứng tâm I biến d1 thành d1': 3x-y+1 = 0 và...
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