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DAU CUA NHI THUCBAC NHAT 10AD2

Total questions: 23

Worksheet time: 12mins

Name
Class
Date
1.
a)

(2;12](3;+)\left(-2;\frac{1}{2}\right]\cup\left(3;+\infty\right)

b)

(2;12)(3;+)\left(-2;\frac{1}{2}\right)\cup\left(3;+\infty\right)

c)

(;2)(3;+)\left(-\infty;-2\right)\cup\left(3;+\infty\right)

d)

(;2)[12;3)\left(-\infty;-2\right)\cup\left[\frac{1}{2};3\right)

2.
a)

(87;23)(1;+)\left(-\frac{8}{7};-\frac{2}{3}\right)\cup\left(1;+\infty\right)

b)

(87;23](1;+)\left(-\frac{8}{7};-\frac{2}{3}\right]\cup\left(1;+\infty\right)

c)

(;87)(1;+)\left(-\infty;-\frac{8}{7}\right)\cup\left(1;+\infty\right)

d)

(;87)(23;1)\left(-\infty;-\frac{8}{7}\right)\cup\left(-\frac{2}{3};1\right)

3.
a)

(;72)\left(-\infty;-\frac{7}{2}\right)

b)

(72;1)\left(-\frac{7}{2};-1\right)

c)

(1;+)\left(-1;+\infty\right)

d)

(;1)\left(-\infty;-1\right)

4.
a)

m > 2

b)

m < 2

c)

m2;m5m\ne2;m\ne5

d)

m2m\ne2

5.
a)

f(x)=2x2+x+1f\left(x\right)=2x^2+x+1

b)

f(x)=2mx+5f\left(x\right)=2mx+5

c)

f(x)=2f\left(x\right)=2

d)

f(x)=3x5f\left(x\right)=3x-5

6.
a)

x > 6

b)

x < 6

c)

x > 2

d)

x < 2

7.
a)

x<15x<\frac{1}{5}

b)

x<15x<-\frac{1}{5}

c)

x>15x>-\frac{1}{5}

d)

x>15x>\frac{1}{5}

8.
a)

x<32x<\frac{3}{2}

b)

x<23x<\frac{2}{3}

c)

x>32x>-\frac{3}{2}

d)

x>23x>\frac{2}{3}

9.
a)

x<32x<-\frac{3}{2}

b)

x<23x<-\frac{2}{3}

c)

x>32x>-\frac{3}{2}

d)

x>23x>-\frac{2}{3}

10.
a)

f(x)=3x+6f\left(x\right)=3x+6

b)

f(x)=63xf\left(x\right)=6-3x

c)

f(x)=42xf\left(x\right)=4-2x

d)

f(x)=3x6f\left(x\right)=3x-6

11.
a)

f(x)=6x4f\left(x\right)=-6x-4

b)

f(x)=3x+2f\left(x\right)=3x+2

c)

f(x)=3x2f\left(x\right)=-3x-2

d)

f(x)=2x+3f\left(x\right)=2x+3

12.
a)

x>3x>3

b)

2<x<3-2<x<3

c)

x<2 hoac x>3x<-2\ hoac\ x>3

d)

x<2x<-2

13.
a)

x>3x>3

b)

1<x<3-1<x<3

c)

x<2 hoac x > 3x<-2\ hoac\ x\ >\ 3

d)

x<1x<-1

14.
a)

x<52x<-\frac{5}{2}

b)

52x1-\frac{5}{2}\le x\le1

c)

52<x1-\frac{5}{2}<x\le1

d)

52x<1-\frac{5}{2}\le x<1

15.
a)

15<x<23\frac{1}{5}<x<\frac{2}{3}

b)

15x23\frac{1}{5}\le x\le\frac{2}{3}

c)

x15hoac x23x\le\frac{1}{5}hoac\ x\ge\frac{2}{3}

d)

x<15 hoac x>23x<\frac{1}{5}\ hoac\ x>\frac{2}{3}

16.
a)

1x31\le x\le3

b)

1x1-1\le x\le1

c)

1x21\le x\le2

d)

1x2-1\le x\le2

17.
a)

x<1 hoac x>3x<-1\ hoac\ x>3

b)

1x3-1\le x\le3

c)

x3x\ge3

d)

x1 hoac x2x\le1\ hoac\ x\ge2

18.
a)

x<103x<\frac{10}{3}

b)

x>103x>\frac{10}{3}

c)

75<x<103\frac{7}{5}<x<\frac{10}{3}

d)

x<75x<\frac{7}{5}

19.
a)

dc<ba\frac{d}{c}<\frac{b}{a}

b)

cd<ba\frac{c}{d}<\frac{b}{a}

c)

bd>ac\frac{b}{d}>\frac{a}{c}

d)

ba<cd\frac{b}{a}<\frac{c}{d}

20.
a)

m=12m=-\frac{1}{2}

b)

m=1m=1

c)

m=12m=\frac{1}{2}

d)

m>12m>\frac{1}{2}

21.
a)

m=3m=3

b)

m<3m<3

c)

m>3m>3

d)

m<13m<\frac{1}{3}

22.
a)

m<2m<-2

b)

m>2m>2

c)

m>12m>-\frac{1}{2}

d)

m>2m>-2

23.
a)

m<2m<2

b)

m=2m=2

c)

m>2m>2

d)

m=±2m=\pm2