Math 128, Spring 2008
Quiz #5
NAM E :
(pts.)
(2)
1. Find the exact maximum or minimum value of this function, f ( x ) = "2 x 2 + x " 3, and circle
whether it is a maximum or minimum.
Max. or Min. value = _
(circle one)
!
(4)
2. You will need a graphing ca
Math 128, Spring 2008
Quiz #4
NAME:
(pts.)
(2)
(2)
1. Write the equation of the circle that has its center at (-1, 3) and that passes through (2, 5).
2. Show that the equation x 2 + y2 12 x + 4 y + 7 = 0 is actually a circle equation, and then find
the ce
Math 128, Spring 2008
Quiz #3
NAM E :
(pts.)
For all of these inequalities, solve for the variable and write the solution in interval notation:
(2)
1. "( 7 " 5 x ) # 2 + 8 x
_
(3)
2. "
1 3" 4x 1
<
#
5
4
2
_
(2)
3. 2 x + 1 > 10
_
(3)
4. Use the sign diagra
Math 128, Spring 2008
Quiz #4, Week 2
NAM E :
(pts.)
(1)
1. Rationalize the denominator and simplify:
1
2" 7
!
(2)
2. Divide and simplify:
5
30 x
x "9 x+ 3
2
!
(2)
3. Factor the expression completely: 81a 4 " 100b 2
!
(3)
4. Simplify this complex fraction
Math 128 M002, Spring 2008
Quiz # 7
NAM E :
(pts.)
(1)
1. p( x ) = " x 13 " x 7 + 2 has at most _ local extrema.
(2)
2. Find the quotient and remainder when p( x ) = 8 x 4 + 6 x 2 " 3 x + 1 is divided by 2 x 2 " x + 2 .
!
!
(7)
!
3. p( x ) = 2 x 3 + 7 x 2
Math 128, Spring 2008
Quiz #4
Key
NAME:
(pts.)
(2)
/
I. Write the equation of the circle that has it center at (-1, 3) and that passes through (2, 5).
(X " , '- -r(/
fil,
( 2)
;:
1\
1
1Z_
(
(
t.-: I]~
7?
I ~ ;)t
2. Show that the equation
t he
)
2
J
(
x -c
[ Math 128, Spring 2008
Q uiz #3
NAME:
K'e.':.jL.-.-
_
(pts.)
F or all of these inequalities, solve for the variable a nd write the solution in interval notation:
( 2)
1.
1
fIl -7
1
t [;X ~
~9
Z f-(g-~
s
L.
nIl
'j. 2:-.3 )~ i J
1 ~-l-~
2 - <
.
~
-'-~"
fj,
V
Math 128, Spring 2008
.
I Quiz #1
(pts.)
1. U
(I
NAME:
the et
cfw_-~,
1
U
~,
l .-/
(I)
a.) List he elements o f he et that are rational
y
-t/~-
n,.J13.
for this que tion.:
J)
_ J-
nllmbers,_~/~l-_1_3~J _ _I_-.L-':-~-=_-+
;
_
j
how!nO' all work and O'ivi
[ Math 128, Spring 2008
Quiz #1
NAME:
(pts.)
(1)
11
1
~ 21
1. Use the set cfw_ - - , - -, - 0.1234, 0, 0 .666 . ,v9, - ,
3
8
12
J r,
r.; for this question:
v 13,
a.) List the elements o f the set that are rational numbers
b.) List the elements o f the set