Hệ tọa độ Oxyz - Tích vô hướng.

Hệ tọa độ Oxyz - Tích vô hướng.

12th Grade

15 Qs

quiz-placeholder

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Hệ tọa độ Oxyz - Tích vô hướng.

Hệ tọa độ Oxyz - Tích vô hướng.

Assessment

Quiz

Mathematics

12th Grade

Hard

Created by

Thai Tran

Used 25+ times

FREE Resource

15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Cho

 a(1;3;2)\overrightarrow{a}\left(1;3;-2\right)  và  b(2;2;1)\overrightarrow{b}\left(2;-2;-1\right)  Vậy  a.b=?\overrightarrow{a}.\overrightarrow{b}=?  

11

-2

-4

6

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 u(2;1;0)\overrightarrow{u}\left(2;1;0\right)  và  v(1;2;4)\overrightarrow{v}\left(1;-2;4\right)  tính  u.v=?\overrightarrow{u}.\overrightarrow{v}=?  

-1

2

0

3

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Cho điểm A(1;3;1), B(2;-3;2), C(4;2;-3). Tích  AB.AC=?\overrightarrow{AB}.\overrightarrow{AC}=?   

5

-5

6

0

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Cho điểm M(2;1;-2), N(-1;0;1) và  n(2;3;1)\overrightarrow{n}\left(2;-3;1\right)  . Tính  MN.n=?\overrightarrow{MN}.\overrightarrow{n}=?  

-2

3

1

0

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Cho u(2;3;1)\overrightarrow{u}\left(-2;3;1\right)  Tính  u=?\left|\overrightarrow{u}\right|=?  

 13\sqrt{13}  

 232\sqrt{3}  

 14\sqrt{14}  

 323\sqrt{2}  

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Cho n(2;1;2)\overrightarrow{n}\left(2;-1;-2\right) . Tính  n=?\left|\overrightarrow{n}\right|=?   

3

2

 10\sqrt{10}  

5

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Cho điểm M(2;3;1), N(1;2;3) Tính đội dài MN ?

5\sqrt{5}

6\sqrt{6}

10\sqrt{10}

2

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