S-2-2t
Câu 12: Đường thẳng d đi qua điểm A(-2; -3) và có VTCP u =(-2;1) có phương trình là
A.<...
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Mathematics, 07.06.2020 09:57 DiiegoWasHere
S-2-2t
Câu 12: Đường thẳng d đi qua điểm A(-2; -3) và có VTCP u =(-2;1) có phương trình là
A.
x = -2- 2t
y=1 - 3t
B.
x= -2+t
y=-3-2t
D.
x=-2-3t.
y=1-2t
C.
x=-2-2t
y= -3+t
II). Phần Tự Luận (4 điểm)
Câu 1: (4 điểm) Cho tam giác ABC biết A(2;-1), B(1;3); C(0; 1)
a. Viết phương trình tổng quát của đường thẳng AB, trung tuyến AM của tam giác.
b. Viết phương trình đường tròn (C) tâm C tiếp xúc với đường thẳng AB,
c. Viết phương trình tiếp tuyến của đường tròn (C) biết tiếp tuyến song song với đường thẳng BC.
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