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Worksheets

Limits 4

Total questions: 75

Worksheet time: 3hrs 45mins

Name
Class
Date
1.

 limx2f(x)\lim_{x\rightarrow-2^-}f\left(x\right)  

a)

DNE

b)

-2

c)

3

d)

-4

2.

 limx2f(x)\lim_{x\rightarrow-2^{ }}f\left(x\right)  

a)

DNE

b)

-2

c)

3

d)

-4

3.

 limx2f(x)\lim_{x\rightarrow2^-}f\left(x\right)  

a)

DNE

b)

 \infty  

c)

 -\infty  

d)

2

4.

 limx2f(x)\lim_{x\rightarrow2^{ }}f\left(x\right)  

a)

DNE

b)

 \infty  

c)

 -\infty  

d)

2

5.

 limx37x+22\lim_{x\rightarrow-3}\sqrt{7x+22}  

a)

 43\sqrt{43}  

b)

1

c)

DNE

d)

3

6.

 limx2x23x+9\lim_{x\rightarrow2}x^2-3x+9  

a)

7

b)

DNE

c)

2

d)

9

7.

 limx618\lim_{x\rightarrow-6}18  

a)

DNE

b)

-6

c)

18

d)

Not enough information

8.

 limxπ4xtanx\lim_{x\rightarrow\frac{\pi}{4}}x\tan x  

a)

 22\frac{\sqrt{2}}{2}  

b)

DNE

c)

 12\frac{1}{2}  

d)

 π4\frac{\pi}{4}  

9.

 limx4x2+6x92x218\lim_{x\rightarrow\infty}\frac{4x^2+6x-9}{2x^2-18}  

a)

DNE

b)

 \infty  

c)

2

d)

0

10.

 limxx3x3+9\lim_{x\rightarrow\infty}\frac{x-3}{x^3+9}  

a)

DNE

b)

0

c)

 \infty  

d)

6

11.

 limx22x8x216\lim_{x\rightarrow2}\frac{2x-8}{x^2-16}  

a)

DNE

b)

 \infty  

c)

2

d)

 13\frac{1}{3}  

12.

 limx1(3x+5)\lim_{x\rightarrow1}\left(3^x+5\right)  

a)

DNE

b)

1

c)

8

d)

 \infty  

13.

 limx5(x27x+10x5)\lim_{x\rightarrow5}\left(\frac{x^2-7x+10}{x-5}\right)  

a)

5

b)

3

c)

-5

d)

Does not exist

e)

 00\frac{0}{0}  

14.
a)
3
b)
0
c)
1
d)
Does not exist
15.

Find limx2xx+22x+4\lim_{x\rightarrow2}\frac{\text{}\frac{x}{x+2}-2}{x+4} 

a)

4

b)

-4

c)

 14\frac{1}{4}  

d)

 14-\frac{1}{4}  

16.

Determine the limit.
 limx(x14+x12x+3)\lim_{x\rightarrow\infty}\left(\frac{x^{14}+x-12}{x+3}\right)  

a)

 \infty  

b)

 -\infty  

c)

-3

d)

4

17.
a)
0
b)
1
c)
2
d)
DNE
18.
a)
0/0
b)
DNE
c)
-1/4
d)
1/4
19.

 Find  limx2 f(x)\lim_{x\rightarrow2\ }f\left(x\right)  

a)

-1

b)

5

c)

0

d)

DNE

20.

If  limxcf(x)=3\lim_{x\rightarrow c}f\left(x\right)=3  limxcg(x)=2\lim_{x\rightarrow c}g\left(x\right)=-2  , and  limxch(x)=4\lim_{x\rightarrow c}h\left(x\right)=4  then find  limxc3h(x)2g(x)\lim_{x\rightarrow c}\sqrt{3h\left(x\right)-2g\left(x\right)} 

a)

16

b)

4

c)

8

d)

12

21.
a)
Does not exist
b)
2
c)
0
d)
1
22.
What is the limit?
a)
DNE
b)
Infinity
c)
6
d)
12
23.
What is the limit of the function as x approaches -4 from the left?
a)
2
b)
-4
c)
DNE
d)
-2
24.
a)
Infinity
b)
20
c)
DNE
d)
12
25.

 limx5   x+52 = ....\lim_{x\rightarrow-5}\ \ \ \frac{x+5}{2}\ =\ ....  

a)

0

b)

5

c)

 \infty  

d)

 52\frac{5}{2}  

e)

 25\frac{2}{5}  

26.

Find the limit as x approaches 7 from the right

a)

1

b)

0

c)

infinity

d)

DNE

27.

Select all statements that are TRUE.

a)
b)
c)
d)
28.

Find the limit

a)

9/12

b)

0

c)

d)

-∞

29.

Find the limit

a)

7/9

b)

0

c)

d)

-∞

30.

Determine the limit.

a)

-\infty

b)

\infty

c)

0

d)

-1

31.

What is the limit of  f(x)=45 +23 (.1)xf\left(x\right)=45\ +23\ \left(.1\right)^x  as  x approaches infinity?

a)

23

b)

45

c)

68

d)

0

32.

 f(x)=(3x52x+47x53x2 )f\left(x\right)=\left(\frac{3x^5-2x+4}{7x^5-3x-2}\ \right)  

What is the limit of f(x) as x appoaches infinity?

a)

 \infty  

b)

 -\infty  

c)

 37\frac{3}{7}  

d)

 00  

33.

 f(x)=(52x4x+12)5f\left(x\right)=\left(\frac{5}{2x}-4x+12\right)^5  

What combination of limit properties are require to evaluate the limit?

a)

Sum, difference, quotient, power

b)

Sum, difference, product, root

c)

sum, difference, product, power

d)

Sum, difference, quotient, root

34.

 f(x)=(x2x2)(x2)f\left(x\right)=\frac{\left(x^2-x-2\right)}{\left(x-2\right)}  

What value must be defined for f(2) to remove the discontinuity of this function at x = 2?

a)

3

b)

-3

c)

0

d)

2

35.

 f(x)=(x2+8x+16)(x+4)f\left(x\right)=\frac{\left(x^2+8x+16\right)}{\left(x+4\right)}  

What value must be defined for f(-4) to remove the discontinuity of this function at x = -4?

a)

8

b)

-8

c)

0

d)

2

36.
Find the limit as x approaches 3 from the left
a)
4
b)
3
c)
2
d)
DNE
37.
What is the limit of the function as x approaches 1 from the left?
a)
DNE
b)
1
c)
4
d)
-2
38.
a)
Does not exist
b)
0
c)
-1
d)
1
39.

The table above gives values of the function at selected values of . What is limx11f(x)?\lim_{x\rightarrow11}f\left(x\right)?  

a)

11

b)

32

c)

32.03

d)

dne

40.

What is the limit of  limx1(x2+1)\lim_{x\rightarrow-1}\left(x^2+1\right)  ?

a)

1

b)

2

c)

3

d)

4

41.

 Find  limx1 f(x)\lim_{x\rightarrow-1\ }f\left(x\right)  

a)

4

b)

0

c)

-1

d)

DNE

42.
What is the limit?
a)
DNE
b)
Infinity
c)
6
d)
12
43.
a)
Does not exist
b)
-7/5
c)
-5/9
d)
-1/2
44.
a)
Does Not Exist
b)
9
c)
1
d)
0
45.
a)
Does not exist
b)
2
c)
0
d)
1
46.
a)
2
b)
0
c)
Does not exist
d)
4
47.

 limx 12x+2x3x3+x+1= ...\lim_{x\rightarrow\infty}\ \frac{1-2x+2x^3}{x^3+x+1}=\ ...  

a)

- 4

b)

- 2

c)

1

d)

2

e)

 \infty  

48.

Find the limit

a)

6/5

b)

0

c)

\infty

d)

-\infty

49.
a)
0/0
b)
DNE
c)
-1/4
d)
1/4
50.
a)
0/0
b)
DNE
c)
-1/4
d)
1/4
51.
a)
0
b)
0/0
c)
1/4
d)
DNE
52.

Evaluate

limx5+(4x5)\lim_{x\rightarrow5^+}\left(\frac{4}{x-5}\right)  

a)

++\infty  

b)

-\infty  

c)

undefinedundefined  

d)

00  

53.

Evaluate

limx0(12x7)\lim_{x\rightarrow0^-}\left(\frac{1}{2x^7}\right)  

a)

++\infty  

b)

-\infty  

c)

undefinedundefined  

d)

00  

54.

Evaluate

limx0+(1x4)\lim_{x\rightarrow0^+}\left(\frac{1}{x^4}\right)  

a)

++\infty  

b)

-\infty  

c)

undefinedundefined  

d)

00  

55.

Use the theorems to evaluate the limit  limx2 24x\lim_{x\rightarrow-2}\ \frac{2}{4-x}  

a)

13\frac{1}{3}  

b)

13-\frac{1}{3}  

c)

1

d)

-1

56.

Use the theorems to evaluate the limit limx3 (2x +6)4x2 36\lim_{x\rightarrow-3}\ \frac{\left(2x\ +6\right)}{4x^{2\ }-36}  

a)

0

b)

does not exist

c)

112-\frac{1}{12}  

d)

-1

57.

Let limx8f(x)=3 and limx8g(x)=10.\lim_{x\rightarrow8}f\left(x\right)=3\ and\ \lim_{x\rightarrow8}g\left(x\right)=10.  Find  limx8f(x)g(x).\lim_{x\rightarrow8}\frac{f\left(x\right)}{\text{g(x)}}.  

a)

8

b)

10/3

c)

-7

d)

3/10

58.

Find limx2xx+22x+4\lim_{x\rightarrow2}\frac{\text{}\frac{x}{x+2}-2}{x+4}

a)

4

b)

-4

c)

14\frac{1}{4}  

d)

14-\frac{1}{4}  

59.

limx4  x27x\lim_{x\rightarrow4}\ \ \sqrt{\frac{x^2-7}{x}}  

a)

112\frac{\sqrt{11}}{2}  

b)

9/4

c)

3/2

d)

no limit

60.

limx 3x2+x+2x3+2x2+1 = ...\lim_{x\rightarrow\infty}\ \frac{3x^2+x+2}{x^3+2x^2+1}\ =\ ...  

a)

0

b)

1,5

c)

2

d)

3

e)

\infty  

61.

Determine the value of the limit

a)

4

b)

-1

c)

1

d)

DNE

62.

Use the given function to determine the value of the limit

a)

DNE

b)

-12

c)

10

d)

0

63.

The limx0f(x) The\ \lim_{x\rightarrow0}f\left(x\right)\ fails to exist because...

a)

As the function approaches zero, left and right of zero do not match

b)

As the function approaches zero, the graph oscillates.

c)

As the function approaches zero, the graph increases without bound.

64.

The limx2f(x) The\ \lim_{x\rightarrow2}f\left(x\right)\  fails to exist because...

a)

As the function approaches two, left and right of two do not match

b)

As the function approaches two, the graph oscillates.

c)

As the function approaches two, the graph increases or decreases without bound.

65.
a)
Infinity
b)
Negative Infinity
c)
2
d)
Does not exist
66.

Find the limit as x approaches 7 from the right

a)

1

b)

0

c)

infinity

d)

DNE

67.
a)
2
b)
-3/4
c)
-1/3
d)
1/4
68.

limx3f(x)=\lim_{x\rightarrow3^-}f\left(x\right)=  

a)

0

b)

6\sqrt{6}  

c)

6

d)

DNE

69.

The graph of f is shown in the figure. Which of the following statements is false?

a)
b)
c)
d)
70.

Find the limit. Hint: Where is the horizontal asymptote?

a)

3/7

b)

0

c)

\infty

d)

-\infty

71.

limx 2x34x +1\lim_{x\rightarrow\infty}\ \frac{2x-3}{4x\ +1}  

a)

0

b)

DNE

c)

1/2

d)

2

72.

limx(2x3+3x1)=\lim_{x\rightarrow\infty}\left(2x^3+3x-1\right)=  
Hint:  Think of the end behavior

a)

\infty  

b)

-\infty  

c)

2

d)

2/3

73.

limxex=\lim_{x\rightarrow\infty}e^x=  
Hint:  Think of the end behavior

a)

\infty  

b)

-\infty  

c)

0

d)

DNE

74.

Determine the limit at infinity by finding the slant asymptote using long division and then looking at the end behavior of the slant asymptote.
limx(x2x12x+3)\lim_{x\rightarrow\infty}\left(\frac{x^2-x-12}{x+3}\right)  

a)

\infty  

b)

-\infty  

c)

-3

d)

4

75.

limx sin xx+4\lim_{x\rightarrow\infty}\ \frac{\sin\ x}{x}+4  

a)

1

b)

0

c)

DNE

d)

4