|Off on a Tangent
|A Fortnightly Electronic
Newsletter from the Hope
College Department of Mathematics
|Poverty/Deprivation, Heart Disease,
Geography and Time: Modeling the Relationship”
January 31 at
research indicates statistical relationships between area-wide measures
of poverty/deprivation and deaths due to chronic diseases. Indices of
poverty/socioeconomic deprivation for 1990 and the change in such
measures from 1990 to 2000 are presented for 3,137 counties in the
United States. These indices are used in a model to determine if
there is a relationship between poverty/deprivation and cardiovascular
disease mortality for white males age 35 and older in 1999-2001.
The model includes a variable for geographic relationships between
counties. Issues related to how the indexes were derived are
discussed, and appropriate maps are presented.
for mathematics majors will be explored
|Careers in Mathematics
February 7 at
Come hear Hope
graduates (and others) discuss how they are using their mathematics
degrees in a variety of occupations. The panel will consist of:
- Leticia Dykema of Deloitte, who
is now working with personalized
benefit statements and will be able to discuss her work in this area as
well as actuarial work
- Tom Werkman, VP and Commercial
Loan Administrator for the Bank of Holland
- Gene Halsey, Director - Sales
and Marketing, Optera
- Kevin Boeve, Finance - Holland
- Nathan Tintle, Statistics, Hope
Bowling + Free Pizza = Bowlizza!
Please join us at 11:00 am on Saturday, February 2, for the Math
Department's annual bowling and pizza party. We'll meet at
Bowling, located at the corner of 9th and Central, and after a couple
games of bowling return to the VZN 247 for pizza. Students and
professors alike will engage in friendly competition for a variety of
noteworthy feats (e.g. highest score, most strikes, largest standard
deviation), with prizes for the winners.
Sign up sheets will be passed around
in your classes. There is also a sign up sheet on Professor
Edwards' door (VWF 218). You need to sign up for this event by
Thursday, January 31.
(Editor's note: Dr. Cinzori is pictured at left bowling a pizza.)
An announcement from the newly formed Hope
College Math Club:
Hello all math people! Ever get jealous of those Chemistry people
walking around with their sweet T-shirts? Well here’s your chance to
make your own sweet 2008 Math T-shirt for the brand new Math Club!
Submit your design for the shirt to Professor Pearson’s office before
our next stimulating math meeting on February
6th at 7 PM in VZN 274. Please join us for the
festivities!! There will be a problem of the fortnight solving party
afterwards as well. See you then! Go mathletes!
The winner of the T-shirt design contest will receive a free T-shirt
and a gift certificate. The winning design, as well as directions
for ordering your T-shirt, will be announced in the newsletter this
is time to start thinking about summer! The mathematics
department at Hope was awarded a 5-year REU grant from the NSF.
For those untrained in acronym-speak, the Hope math department
has a grant from the National Science Foundation for Research
Experiences with Undergraduates. Faculty in the department will
be mentoring students in mathematics research this summer.
Descriptions of research projects can be currently found at the online
application site: http://sharp.hope.edu/.
If you are interested in applying for summer research at Hope,
please talk to any of the math professors. Hope students
interested in doing math research should complete an application by Friday, February 1.
Problem of the Fortnight
Compute the integral
(x6 + x3) (x3 + 2)1/3 dx
Write your solution (not just the answer!) on the back of a picture of
your favorite mathematician and drop it
by Dr. Pearson's office (VWF 212) by noon
on Friday, February 8.
to write your name, the name(s) of your
professor(s), and your math class(es) on your solution (e.g. N.T.
Grand, Prof. Tex Nique, Math 132). Solutions should show the
technique(s) of integration used, and so solutions using a computer
algebra system will not be accepted. There are at least four
different ways to solve this problem, three of which use nothing more
than elementary integration techniques. Good luck, and have fun!
Solvers of the Fortnight
POF was the following: Parallelogram
ABCD has been "sliced"
by diagonal AC and the segment BM, with M as the midpoint of CD.
The point E is the intersection of AC and BM. If the entire
parallelogram has an area of X square units, find the areas of the four
pieces. Justify your answer.
Congratulations to Andrea Eddy, James Daly, Joel Blok, Kylie Topliff,
Dan DeHaan, David Herman, Aaron Silver, Kelsey Ensz, Jeff Minkus,
Zachary Mitchell, Ashley Gruenberg, Joel Mulder, Lauren Steel, Eileen
Sanderson, and Luke Wendt for correctly determining that the area of
triangle MEC is X/12, the area of triangle AEB is X/3, the area of
triangle BEC is X/6, and the area of quadrilateral AEMD is 5X/12.
I am a college
student and very interested in mathematics. I have many problems and always
try to solve math problems in a different way. Here are my
1. What is
application of complex number?
2. What is
3. Tell me
easiest ways of forming an quadratic equation if roots
are a, b?
happen if it is written, 1/0=?
4. What is
5. What is
application of e based log(ln)?
Dear College Student,
I am a dog and very interested in mathematics, as well. As you
might now from journal articles about me, I, too, like to find the
optimal solutions to problems. I'll try to answer your questions
as best I can. First, complex numbers and functions of complex
numbers have all sorts of applications to the 'real world.' For
example, complex numbers are ideal for describing phenomena in
electricity and magnetism. I'm not sure, but they might work well
for animal magnetism as well.
Second, Riemannian geometry deals
with a wide variety of geometries where the metric (the function that
describes how distances are measured) varies from point to point, and
forms the basis for Einstein's Theory of General Relativity. I'm
not sure whether Einstein had a dog, but I loved the dog named
'Einstein' in the 'Back to the Future' movies!
If you know the
roots of a quadratic equation are a and b, then the equation must have
been something like 0 = c (x - a)(x
- b), where a, b, and c are
constants. One constant in my life is dog treats! I sure do
In answer to your second question #3, I would advise
you NEVER to write '1/0 = ?' You might open a worm hole in time
and be able to travel into the future, like they did in Back to the
Future. I've never had worms, thankfully, but I sure do
Really, any movie with a dog in it is a great
movie, as far as I'm concerned. Groups of dogs in movies are even
better -- like Eight Below.
I'm not sure if group theory
applies to groups of dogs -- I tend not to travel with the pack -- but
it is an interesting area of mathematics that studies the structures of
certain kinds of mathematical sets. You should take a course in
it someday; you'll like the many ways that group theory can provide
neat solutions to problems.
Finally, in answer to your last
question, there are all sorts of applications for the natural
log. It shows up all the time in nature -- for instance, in
natural growth and decay problems, like a colony of bacteria growing or
a radioactive isotope decaying into other elements. I've never
been around any substantial amounts of radioactive elements, as far as
I know, but I have had my fair share of run-ins with bacteria! A
couple weeks ago, I had a scratch on my face that got infected.
Boy did that itch! Fortunately, the bacteria in that scratch did
not continue to grow exponentially, or my eye might have swelled to the
point where I couldn't read all the questions in your email. That
would not have been good! Thanks for your email. Best
wishes with your studies of math!
Most people say that
it is the intellect which makes a great scientist. They are wrong: it
~ Albert Einstein