TRONG KHÔNG GIAN OXYZ, CHO CÁC ĐIỂM $ A\LEFT( {1;\,\,0;\,2} \RIGHT),\,\,B\LEFT( {1;\,2;\,1} \RIGHT),\,\,C\LEFT( {3;\,\,2;\,\,0} \RIGHT)$ VÀ $ D\LEFT( {1;\,\,1;\,\,3} \RIGHT)$. ĐƯỜNG THẲNG ĐI QUA A VÀ VUÔNG GÓC VỚI MẶT PHẲNG (BCD) CÓ PHƯƠNG TRÌNH LÀ
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Level:
Medium
Question Types: Multiple choice
Answers:
- $ \\\left\\\{ \\\begin{array}{l} x = 1 - t\\\\\\ y = 4t\\\\\\ z = 2 + 2t \\\end{array} \\\right.$
- $ \\\left\\\{ \\\begin{array}{l} x = 1 + t\\\\\\ y = 4\\\\\\ z = 2 + 2t \\\end{array} \\\right.$
- $ \\\left\\\{ \\\begin{array}{l} x = 1 - t\\\\\\ y = 2 - 4t\\\\\\ z = 2 - 2t \\\end{array} \\\right.$
- $ \\\left\\\{ \\\begin{array}{l} x = 2 + t\\\\\\ y = 4 + 4t\\\\\\ z = 4 + 2t \\\end{array} \\\right.$