Math 125
Quiz 7 (4.3-4.4)
November 12, 2010
Name_
1. Compute the following derivatives.
a) f ( x ) = (2 x 3 + 3 x ) 7
b) f ( x ) = (3 x 2 7 x + 2)( x 4 8)
2
c) f ( x ) = x 3 ( x 3 x )
d) f ( x ) = 7 x 2 (3 x + 1) 6
e) f ( x ) =
2x 2 + 3
x2 4
Math 125
Review for Test 2
The second test will be given in class on Friday, October 29, 2010. The test will cover
the following material.
Chapter 2: Polynomial and Rational Functions
2.1 Quadratic Functions: You should be able to switch between the verte
4.6: Related Rates (HW: 15, 19, 23, 27, 30, 31, 33, and 35 in section 4.6)
1) Identify the known rates and the ones to be found in terms of a derivative with
respect to time. Identify each variable.
2) Find an equation relating the variables identified in
Math 125
Review for Test 1
The first test will be given in class on Friday, October 1. It will cover the following material.
P.1 Solving Equations: You should be able to solve linear equations, quadratic equations by
factoring and the quadratic formula, e
Math 125
Test 3 (Chap 4)
November 17, 2010
1. Given the function if f ( x ) =
Name_
4
do the following: (15 points)
x
a) Using the definition of the derivative, show that f ' ( x ) =
4
. Make sure you
x2
include all the details! Neatly!
f ( x + x ) f ( x
Math 125
Test 1 (P1, C1)
October 1, 2010
Name_
1. Let g ( x ) = x 2 4 and f ( x ) = x . Find the equation for each of the following
compositions and simplify. Include the domain of each composition. [10 pts]
a) f o g
Domain_
b) g o f
Domain_
2. Find the i
Math 125
Test 2 (Chap 2-3)
October 29, 2010
Name_
1. Suppose y = f (x ) is the function shown in the following graph. (12 pts)
a)
b)
c)
lim f ( x ) = _
d)
lim f ( x ) = _
e) lim f ( x ) = _
lim f ( x ) = _
f)
x 1
x 1
x 3
lim f ( x ) = _
x 3 +
x 3
f (1) =
Investigation Chapter 3: Faking Cell Phone Calls
Have you ever pretended to be talking on your cell phone in order to avoid interacting with people around you?
Is faking cell phone calls a common practice among cell phone users? A recent survey conducted
Chapter 10: Exercise Solutions
Section 10.1
10.1.1: The correlation will be negative: larger distances go with lower exam scores and viceversa.
10.1.2: The correlation will be positive: higher temperatures go with larger amounts of ice
cream sold, and vic
Investigation Chapter 2: Cell phones while driving
Drivers today have many more distractions to deal with than drivers of a century ago. Lets
focus on new drivers, aged 16 to 17. Do you think a majority of drivers aged 16 to 17 have ever
talked on the cel
Solutions to the Preliminaries Exercises
P.1
a. Observational units: 47 students, Variables: (1) How much each student spent ($), (2) what
the student was told (rebate or bonus)
b. Observational units: Typical American consumers, Variable: (1) How much ea
Chapter 8 Exercise solutions
8.1.1 MAD statistic.
If you dont take absolute values there are two potential problems, automatic
zeros and ambiguity.
(1) Automatic zeros. Recall Example 8.1 Coming to a Stop. The differences
were: , , and . If you add these
Chapter 9 Exercise Solutions
Section 9.1
Conceptual Exercises
9.1.1
If you dont take absolute values there are two potential problems, automatic zeros and
ambiguity. (1) Automatic zeros: Finding the sum of the differences could always result in
zero if yo
Solutions to Chapter 4 Exercises
Section 4.1
Conceptual Exercises
4.1.1
a) The smoking status of the parent is related to both the explanatory and response
variable in the study.
b) Even if you randomly assigned children to pretend smoke candy cigarettes
Chapter 5: Exercises Solutions
Section 5.1
Conceptual Exercises
5.1.1: School spirit.
a) The observational units are the college students.
b) The response variable is whether or not the student is wearing clothing that displays the
college name or logo on
Solutions to the Chapter 6 exercises
Section 6.1
Conceptual exercises
6.1.1
a) 65.86 is the mean and 67.50 is the median. Since the dataset is left-skewed the mean is
pulled in the direction of the skew (lower), while the median is not.
b) Mean: Larger, M
Chapter 7: Exercises SOLUTIONS
Section 7.1
Conceptual Exercises
7.1.1
a)
b)
c)
d)
Paired analysis appropriate
Paired analysis not appropriate
Paired analysis appropriate.
Paired analysis not appropriate
7.1.2
a) Null hypothesis: Females and males are equa
Solutions to Chapter 2 Exercises
Section 2.1
Conceptual Exercises
2.1.1
A
2.1.2
a) B b) B
2.1.3
B
Application Exercises
2.1.4
a) The symbol represents the proportion of all American adults that drink at least one
b)
c)
d)
e)
f)
glass of soda on a typical
Solutions to Chapter 1 exercises
Section 1.1
Conceptual Exercises
1.1.1
a) The true proportion of times the racquet lands face up
b) 50%
c) Fair
d) 48 out of 100 does not constitute strong evidence that the spinning process is not fair,
because if the spi
Solutions to Exercises Chapter 3
Section 3.1
Conceptual Exercises
3.1.1
a) Height: not representative since nursing majors are required to take the course and
b)
c)
d)
e)
f)
g)
nursing majors have a very high proportion of females who on average are short
Unit1Overview
SignificanceHowstrongistheevidenceofan
effect?(Chapter1)
p EstimationHowlargeistheeffect?(Chapter
2)
p GeneralizationHowbroadlydothe
conclusionsapply?(Chapter3)
p CausationCanwesaywhatcausedthe
observeddifference?(Chapter4)
p
Chapter1
Signif
Math 126 ié/V
Test 1 (Chap 6, 7.1, 7.2) Name 5 K
February 3, 2011
1. Evaluate the following indefinite integrals. {6 pie each)
a) Ix/xsdx :7 glxvzggg : £«.7/z+ C
7
i e -2 __ vi
b) Ixzdxrggrx J75 gfc fig66
L? 3
3+4x3v2
d d a t _