DANVILLE
AREA COMMUNITY COLLEGE
COLLEGE ALGEBRA
MATH 111, Fall 2008
Grades/Solutions: Math
111
ID
P1/2/3/4/5/6/7/8/9/0/1/2/3/4/5/6/ex1/1/2/2/3/4/5/6/7/8/9/0/0/e2/2/1/2/3/4/5/6/e3/3i/2/3/4/
279 3/4/4/5/4/0/3/4/4/2/3/2/1/2/4/0/ 58/2/0/4/5/5/2/5/3/0/4/4/0/43/
785 5/3/0/3/3/6/4/5/5/5/6/4/4/0/0/4/ 82/0/0/3/0/0/0/0/0/0/0/0/0/
840 5/4/6/3/4/4/4/6/4/4/3/3/3/4/4/3/ 74/4/3/5/4/5/5/3/3/5/0/4/4/76/
739 5/6/4/5/4/6/5/6/6/6/5/4/4/6/5/5/ 80/4/0/3/5/5/5/6/3/6/6/6/4/80/
081 5/4/5/4/3/4/5/6/5/4/5/3/5/5/5/4/ 92/4/6/5/6/6/6/5/0/4/5/6/4/88/
047 5/4/5/3/4/6/3/5/0/0/0/2/0/0/3/4/ 55/0/0/2/0/0/4/4/0/0/0/0/0/59/
063 5/4/4/6/3/3/3/4/5/0/0/4/0/4/4/4/ 56/0/4/4/4/6/0/0/3/0/3/3/0/70/
167 6/6/6/6/5/6/6/6/6/6/4/6/6/6/6/6/ 94/5/6/5/6/6/6/6/5/6/6/6/0/98/
374 6/5/6/5/4/5/4/6/4/0/0/2/3/4/4/4/ 70/0/4/4/4/6/0/0/3/0/3/3/0/71/
469 4/4/3/5/0/4/5/6/5/0/5/4/0/4/0/4/ 63/0/3/6/3/5/5/4/3/0/5/4/6/69/
262 5/4/4/6/0/4/4/5/6/0/5/3/0/5/0/0/ 76/3/2/4/6/6/5/6/4/4/5/5/0/72/
H.K 5/5/5/6/3/4/5/5/5/5/5/6/4/4/5/6/ 74/3/0/0/0/5/0/6/4/4/5/6/6/63/
H.J 4/0/4/2/4/0/0/5/6/0/5/5/5/5/0/0/ 56/0/4/4/6/5/4/6/3/0/0/0/6/48/
K.C 0/6/4/4/4/6/4/5/4/3/4/4/4/5/4/4/ 74/0/2/3/4/6/4/6/5/5/5/5/4/70/
A.H
/0/5/0/4/4/0/0/ 71/3/3/3/6/6/5/6/3/4/5/5/0/72/
326 5/3/0/5/4/0/0/5/0/0/0/0/0/5/4/3/ 52/2/0/0/0/0/0/3/2/6/0/0/0/00/
MAX 6/6/6/6/6/6/6/6/6/6/6/6/6/6/6/6/6/6/6/6/6/6/6/66//6/6/6/6/6/100/
Solutions to Homework 2-1 to 2-6:
2-1(page 172):(2)Both,
(12)No, (14)Yes, (20)Yes, (32)Yes, (38){1,2,3,4},{2,4,8,16},
(46)(-infinity,5],[0,infinity)
(58)-6, (68)4h, (78)-2, (90)-2/(x+h-1)(x-1),
(92)a,A=pi*r^2;b,r=sprtA/pi;c,
c=2pi*r;d,d=2r;e,d=c/pif,A=pi*d^2/4;g,d=2sprtA/pi.
2-2(page 186):(12)[0,infinity),(-infinity,2],Yes,(32)[1,infinity)(-infinity,infinity),
No,(34)(-infinity,
infinity),{1,3},
(40)(-infnity,infinity),[3,infinity),
(50)(-infinity,infinity),[0,infinity),
dec(-infinity,0),inc(0,infinity),
(52)(-infinity,infinity),dec(-infinity,-2),(-2/3,infinity),
inc(-2,-2/3),
(58)(-infinity,infinity),[1,infinity),dec(-infinity,0],inc(0,infinity),
(66)(-infinity,infinity),(-infinity,4]inc(-infinity,-2),(0,2)dec(-2,0),(2,infinity),
(68)f(X)=3 for
x<=1,f(x)=-2
for x>1, (70)f(x)=x+2 for x<=1, f(x)=2-x for x>1.
Solutions for the review problems:
