Quiz #2 (0,7, 1.4,
Classlb:
Math 1210
-
1.5)
September 4, 2012
Score
Instructor: Katrina Johnson
Name:
008 Fall 2012
Instructions: Complete each problem. Show all of your work as partial credit will be
given where appropriate, and there may be NO credit given for problems without
supporting work All answers should be completely simplified. unless otherwise
stated. You may NOT use a calculator.
(8 pts) 1. For y
=
3cos(4x —3r)+2, find the following information.
amplitude?
period?
vertical shift
(up or down)
horizontal shift
(right or left)
(9 pts) 2. Find the limit: urn
x-
-2x
6
5x
+
2
1
3x 6 -40
•
urn
x
—2x
6
5x
+
2
1
—10
6
3x
=
x
x —5
(9 pts) 3. Find the limit: urn
x—5
r
-‘-
.
:.
h
.
...
.
.:
•.•
:
:.f,
0
o
.
.
urn
x-*5
x
x —5
(14 pts) 4. Find the limits:
a)lim
x
4
cos
x—o2sjnx7
-
-..
cos
x
4
x-o2sjnx7
urn
b)
sin(3t)
!-otan(2t)
urn
¶
sin(3t)
lam
‘—°tan(2t)
..
..