Ôn tập toán CK2

A. $$y=-\frac{3}{2}$$

B. $$x=-3$$

$$x=-\frac{3}{2}$$

$$y=-3$$

A. $$y=-2x^2+3x-1$$

B. $$y=-x^2+3x-1$$

C. $$y=2x^2-3x+1$$

D. $$y=-x^2-3x+1$$

A. { $$\frac{3}{5}$$ }

B. {0}

C. {0; $$-\frac{3}{5}$$ }

D. {0; $$\frac{3}{5}$$ }

A. (1;3)

B. (–∞; 1)∪(3; +∞)

C. [1; 3]

D. (–∞; 1]∪[4; +∞)

A. $$I\left(-1,2\right);R=\sqrt[]{5}$$

B. $$I\ \left(-1,2\right);R=4$$

C. $$I\ \left(1,2\right);R=4$$

D. $$I\left(1;-2\right);R=2$$

A. $$\left(x+1\right)^2+\left(y-3\right)^2=2$$

B. $$\left(x+1\right)^2+\left(y-3\right)^2=4$$

C. $$\left(x-1\right)^2+\left(y+3\right)^2=4$$

D. $$\left(x+1\right)^2+\left(y-3\right)^2=10$$

A. $$\overrightarrow{u}=\left(-3,1\right)$$

B. $$\overrightarrow{u}=\left(3,1\right)$$

C. $$\overrightarrow{u}\left(1,2\right)$$

D. $$\overrightarrow{u}=\left(1,3\right)$$

A. 3x-4y=0

B. 4x-3y=0

C. 4x+3y=0

D. 3x+4y=0

A. $$30\degree$$

B. $$45\degree$$

C. $$60\degree$$

D. $$135\degree$$

A. $$F1=\left(-25,0\right);\ F2=\left(25,0\right)$$

B. $$F1=\left(0,-5\right);\ F2=\left(0,5\right)$$

C. $$F1=\left(0,-56\right);\ F2=\left(0,56\right)$$

D. $$F1=\left(-5,0\right);\ F2=\left(5,0\right)$$