Quiz_Biểu thức tọa độ của các phép toán véc-tơ

Quiz
•
Mathematics
•
12th Grade
•
Hard
Thai Cao
Used 10+ times
FREE Resource
14 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(2;-3;-4)
(-3;2;-4)
(-3;2;4)
(3;-2;4)
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(4;2;1)
(4;-2;1)
(4;-2;-1)
(4;2;-1)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(3;4;1)
(-1;-2;3)
(3;5;1)
(1;2;3)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(1;-1;-1)
(3;0;-2)
(0;3;1)
(-1;1;1)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong mặt phẳng với hệ tọa độ Oxyz, tam giác ABC với A(1;-3;3), B(2;-4;5), C(a;-2;b) nhận điểm G(1;c;3) làm trọng tâm của tam giác đó. Tính a+b+c.
a+b+c=-5
a+b+c=-3
a+b+c=2
a+b+c=-2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong không gian Oxyz, hình chiếu vuông góc của điểm A(2;3;-1) lên trục Oy có tọa độ là
(2;0;-1)
(0;3;0)
(2;-3;-1)
(-2;3;1)
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong không gian với hệ tọa độ Oxyz, cho ba điểm M(2;3;-1), N(-1;1;1), P(1;m-1;2). Tìm m để tam giác MNP vuông tại N.
m=-6
m=0
m=6
m=2
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