TRONG KHÔNG GIAN VỚI HỆ TỌA ĐỘ $ OXYZ$, PHƯƠNG TRÌNH NÀO DƯỚI ĐÂY LÀ PHƯƠNG TRÌNH THAM SỐ CỦA ĐƯỜNG THẲNG ĐI QUA HAI ĐIỂM $ A\LEFT( {1;0;1} \RIGHT)$ VÀ $ B\LEFT( {3;2; – 1} \RIGHT)$.
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Level:
Medium
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Question Types: Multiple choice
Answers:
- $ \\\left\\\{ \\\begin{gathered} x = 3 + t \\\hfill \\\\\\ y = 2 - t \\\hfill \\\\\\ z = - 1 - t \\\hfill \\\\\\ \\\end{gathered} \\\right.,t \\\in R$.
- $ \\\left\\\{ \\\begin{gathered} x = 1 - t \\\hfill \\\\\\ y = - t \\\hfill \\\\\\ z = 1 + t \\\hfill \\\\\\ \\\end{gathered} \\\right.,t \\\in R$.
- $ \\\left\\\{ \\\begin{gathered} x = 1 + t \\\hfill \\\\\\ y = 1 + t \\\hfill \\\\\\ z = - 1 - t \\\hfill \\\\\\ \\\end{gathered} \\\right.,t \\\in R$.
- $ \\\left\\\{ \\\begin{gathered} x = 2 + t \\\hfill \\\\\\ y = 2 + t \\\hfill \\\\\\ z = - 2 - t \\\hfill \\\\\\ \\\end{gathered} \\\right.,t \\\in R$.