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Limit of a function (STEM12A)

Total questions: 10

Worksheet time: 21mins

Name
Class
Date
1.

 lim⁡x→2x−24−x2\lim_{x\rightarrow2}\frac{\sqrt{x-2}}{4-x^2}  

a)

0

b)

2

c)

-2

d)

does not exist

2.

 lim⁡x→−2 𝑥3−14𝑥2+13x+63𝑥2+7x+2\lim_{x\rightarrow-2}\ \frac{𝑥^3-14𝑥^2+13x+6}{3𝑥^2+7x+2}  

a)

7

b)

10

c)

imaginary

d)

does not exist

3.

 lim⁡x→5 x−5x−5\lim_{x\rightarrow5}\ \frac{x-5}{\sqrt{x-5}}  

a)

0

b)

1

c)

5

d)

does not exist

4.

 lim⁡x→∞ 6x5−5x+3050−2x5\lim_{x\rightarrow\infty}\ \frac{6x^5-5x+30}{50-2x^5}  

a)

-3

b)

2

c)

6

d)

does not exist

5.

 lim⁡x→∞ 6x3−5xx2+1010x+20x3−2x5\lim_{x\rightarrow\infty}\ \frac{6x^3-5xx^2+10}{10x+20x^3-2x^5}  

a)

0

b)

2

c)

4

d)

does not exist

6.

At what values it will become doscontinous f(x)=x2+7x+62x2+x−3f\left(x\right)=\frac{\sqrt{x^2+7x+6}}{2x^2+x-3}  

a)

{-1,-6}

b)

{3/2, -1}

c)

{-3/2, -1}

d)

{1,6}

7.

There are 5 steps in determining the continuity of a function.

a)

TRUE

b)

FALSE

8.

In ordert a function is said to be continous, the use definition of limits and evaluation is necessary to check the values on a certain number.

a)

TRUE

b)

FALSE

9.

 lim⁡x→2   ( x2−3x +1 )\lim_{x\rightarrow2}\ \ \ \left(\ x^2-3x\ +1\ \right)  

a)

-10

b)

2

c)

-1

d)

does not exist

10.

 f(x)=2x2+3x−1f\left(x\right)=2x^2+3x-1  

Determine if f(x) is continous at x = 1

a)

Yes, it is continuous at x = 1

b)

No, it is discontinuous at x = 1

c)

does not exist