Ôn tập chương II. Hàm số

$$A\left(0;-1\right)$$  

$$B\left(3:5\right)$$  

$$C\left(5;3\right)$$  

$$D\left(2;3\right)$$  

$$y=x^4-2x^2-3x$$  

$$y=2x^2-3x+1$$  

$$y=\left|2x-1\right|+\left|2x+1\right|$$  

$$y=\sqrt[]{3-x}-\sqrt[]{3+x}$$  

$$y=3x^3-5x+1$$  

$$y=x^3-2021x+\frac{1}{x}$$  

$$y=\left|x\right|$$  

$$y=3x-x^2$$  

$$y=\left|x\right|$$  

$$y=x^2-2x-3$$  

$$y=2x+1$$  

$$y=\frac{1}{x}$$  

$$y=\frac{2x-1}{x+1}$$  

$$y=\sqrt[]{2x-2021}$$  

$$y=\left|x+1\right|-\left|\frac{1}{x}\right|$$  

$$y=\frac{1}{x^2+1}$$  

$$x=2$$  

$$x=-2$$  

$$x=4$$  

$$x=-4$$  

$$y=-3$$  

$$y=2$$  

$$y=-1$$  

$$y=1$$  

$$A\left(-\frac{1}{2};0\right)$$  

$$A\left(-\frac{1}{2};0\right)$$  và $$B\left(2;0\right)$$  

$$A\left(2;0\right)$$  

$$A\left(\frac{1}{2};0\right)$$  

$$A\left(2;0\right)$$  

$$B\left(0;-1\right)$$  

$$C\left(-\frac{1}{2};0\right)$$  

$$D\left(\frac{1}{2};0\right)$$  

0

2

3

1