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thanhthao2007
2 năm trước
Viết phương trình tham số, phương trình chính tắc của đường thẳng d trong các trường hợp sau: a. Phương trình đi qua điểm A(1, 2) nhận u (1, 1− ) làm vecto pháp tuyến. b. Phương trình đi qua điểm B(0,1) vuông góc với đường thẳng y x = + 2 1. c. Phương trình song song với đường thẳng 4 3 1 0 x y + − = và đi qua điểm M(0, 1)
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