Quiz about Координаты вектора. Сложение. Умножение на число.

Question 1

$$Если\ \overrightarrow{a}\left(2;\ 4\right),\ то$$

Accepted Answer

$$3\overrightarrow{a}\left(6;\ 12\right)$$

Answer

$$3\overrightarrow{a}\left(6;\ 4\right)$$

Answer

$$3\overrightarrow{a}\left(6;\ 8\right)$$

Question 2

$$Если\ \overrightarrow{a}\left(-2;\ 0\right),\ то$$

Accepted Answer

$$-2\overrightarrow{a}\left(4;\ 0\right)$$

Answer

$$-2\overrightarrow{a}\left(-4;\ -2\right)$$

Answer

$$-2\overrightarrow{a}\left(4;\ 2\right)$$

Question 3

$$Если\ \overrightarrow{a}\left(-2;\ -3\right),\ то$$

Accepted Answer

$$-3\overrightarrow{a}\left(6;\ 9\right)$$

Answer

$$-3a\left(-6;\ -9\right)$$

Answer

$$-3\overrightarrow{a}\left(4;\ 6\right)$$

Question 4

$$Если\ \overrightarrow{a}\left(6;\ -8\right),\ то$$

Accepted Answer

$$\frac{1}{2}\overrightarrow{a}\left(3;\ -4\right)$$

Answer

$$\frac{1}{2}\overrightarrow{a}\left(3;\ 4\right)$$

Answer

$$\frac{1}{2}\overrightarrow{a}\left(12;\ -16\right)$$

Question 5

$$A\left(4;\ 2\right),\ \ \ B\left(5;\ -1\right).$$

Accepted Answer

$$\overrightarrow{AB}\left(1;\ -3\right)$$

Answer

$$\overrightarrow{AB}\left(-1;\ 3\right)$$

Answer

$$\overrightarrow{AB}\left(1;\ -1\right)$$

Question 6

$$A\left(1;\ 4\right),\ \ \ B\left(-4;\ 2\right).$$

Accepted Answer

$$\overrightarrow{AB}\left(-5;\ -2\right)$$

Answer

$$\overrightarrow{AB}\left(3;\ 2\right)$$

Answer

$$\overrightarrow{AB}\left(-3;\ 2\right)$$

Question 7

$$A\left(-2;\ 7\right),\ \ \ B\left(1;\ 4\right).$$

Accepted Answer

$$\overrightarrow{AB}\left(3;\ -3\right)$$

Answer

$$\overrightarrow{AB}\left(-1;\ -3\right)$$

Answer

$$\overrightarrow{AB}\left(3;\ 3\right)$$

Question 8

$$\overrightarrow{a}\left(4;\ 5\right),\ \overrightarrow{b}\left(0;\ 3\right),\ \overrightarrow{a}+\ \overrightarrow{b}=?$$

Accepted Answer

(4; 8)

Answer

(4; 2)

Answer

(0; 8)

Question 9

$$\overrightarrow{a}\left(4;\ 5\right),\ \overrightarrow{b}\left(0;\ 3\right),\ \overrightarrow{a}-\ \overrightarrow{b}=?$$

Accepted Answer

(4; 2)

Answer

(0 2)

Answer

(4; 8)

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