Randolph College
Department of Mathematics and Computer Science

 

Homework # 7 - Math 149


The problems on this homework must be done alone.  The honor code is in effect.

 First name:   Last name:


Evaluate the following limits.

 

1.   $$\lim_{x \rightarrow 3} \frac{x^2 - 9}{x^2 - 2x - 3}$$

a.  \(\frac{2}{3}\)

b.  \(\frac{3}{2}\)

c.  \(\frac{9}{2}\)

d.  \(-\frac{3}{2}\)

e.  \(-\frac{2}{3}\)

 

2.   $$\lim_{x \rightarrow 2} \frac{x^2 - 1}{x^2 - 3x}$$

a.  \(\frac{2}{3}\)

b.  \(\frac{3}{2}\)

c.  \(\frac{9}{2}\)

d.  \(-\frac{3}{2}\)

e.  \(-\frac{2}{3}\)

 

3.   $$\lim_{x \rightarrow 3} \frac{\sqrt{x+1} - 2}{x - 3}$$

a.  \(\frac{2}{3}\)

b.  \(-\frac{1}{4}\)

c.  \(\frac{1}{4}\)

d.  \(-\frac{2}{3}\)

e.  \(-\frac{1}{3}\)

 

4.   $$\lim_{x \rightarrow 0} \frac{\cos x \tan x}{x}$$

a.  -1

b.  0

c.  1

d.  2

e.  \(\frac{2}{\pi}\)

 

5.   $$\lim_{x \rightarrow \frac{\pi}{2}} \frac{\sin x}{x}$$

a.  -1

b.  0

c.  1

d.  2

e.  \(\frac{2}{\pi}\)