Off on a Tangent
A Fortnightly Electronic Newsletter from the Hope College Department of Mathematics
   March 26, 2008 Vol. 6, No. 11  
http://www.math.hope.edu/newsletter.html


Colloquium Today!

Title:
Actuaries: the Best-kept Secret in Business
Speaker:
Prof. Curtis Huntington, University of Michigan
Time:
Wednesday, March 26 at 4:00 p.m.
Place:
VWF 238

  Abstract: The actuarial profession is at the intersection of mathematics and the world of business.  It provides students who love mathematics and the study of risk an opportunity to work in the real world of finance and business while serving society.  Learn how you prepare to become an actuary and what to expect once you graduate.  The actuarial field is consistently rated as one of the top five jobs in the United States - it may provide the right answer for you as you select a future career.


Last day to register for the Lower Michigan Mathematics Competition

Contest Date: Saturday, April 5
Location:
Lawrence Technological University in Southfield, Michigan
How to Register:
Sign up on the sheet on Prof. Edwards Door (VWF 218) or email her at sedwards@hope.edu
Registration Deadline: Wednesday,  March 26

The 32nd Annual Lower Michigan Mathematics Competition will be held at Lawrence Tech this year on Saturday, April 5.  Students from colleges and universities in Michigan will gather there to challenge themselves on 10 interesting problems, working together in teams of up to three people. The competition runs from 9:30 a.m. to 12:30 p.m. After the problem session in the morning, there will be a break for lunch followed by a solutions session in the afternoon. Registration is free and students in Math 131 and up are encouraged to participate. Interested students may sign up individually or in teams. The deadline for registering is Wednesday, March 26.

Hope has a history of strong showings at the LMMC, including several championships, and we'd like to regain the title this year and bring the Klein Bottle Trophy back to Hope!


Next week's colloquium is on Outer Billiards

Title:
Outer Billiards
Speaker:
Prof. Filiz Dogru, Grand Valley State University
Time:
Thursday, April 3 at 4:00 p.m.
Place:
VWF 238

  Abstract: Outer billiards is a simple dynamical system in the plane based on a convex shape. B.H. Neumann introduced outer billiards in the 1950s and J. Moser popularized it in the 1970s.
In this talk Prof. Dogru shall present a brief history and developments of the subject. She will also discuss selected recent results of periodic and non-periodic orbits in polygonal outer billiards.


The Problem of the Fortnight

The problem of the fortnight involves a towering exponential.  We hope you construct a solution that is on a more solid foundation than the engineers at Pisa did!

Calculate the derivative with respect to x of the function




[To be clear, the function is x to the x to the x.]  Write your solution on the back of a picture of a famous tower and drop it by Dr. Pearson's office (VWF 212) by noon on Friday, April 7.  Be sure to write your name, the name(s) of your professor(s), and your math class(es) on your solution (e.g.  Marge N. L. Growth, Prof. Cal DeRivative, Math 172).  Good luck, and have fun!


Problem Solvers of the Fortnight

The previous problem of the fortnight was:

Find positive numbers b and k such that f(x) = kx3 is a probability density function on [0,b] with a median of 3.

The solution is: To make
f(x) = kx3 a probability density function on [0,b] with a median of 3, we need k = 81/2 and b = (162)1/4.  A detailed solution of the problem is posted on the math bulletin board, and you can check it out there!

Congratulations to: Mark Panaggio, Mark Gilmore, Luke Wendt, Ben Herrman, James Nichols, Valerie Winton, Jack Lepird, Zach Mitchell, Bryan McMahon, Jill Immink, Josh Kinder, Andrea Eddy, Eric Lunderberg, Layne Fowler and Sam Baker.


Still Crazy After All These Years

It seems that today, March 26, is the birthday for many famous singers.  Rapper Juvenile turns 33 today, country singer Kenny Chesney turns 40, rocker Steven Tyler is 60, and Motown's own Diana Ross turns 64.  Locally our own singing mathematics professor, Tim Pennings, turns 50.  (Or just L if you like Roman numerals.)

If you see Prof. Pennings this week don't forget to wish him a happy birthday.





Do you like my hat? 
No I do not like that hat. 
Good-bye!
Good-bye.

~ P.D. Eastman (From Go Dog Go)

Off on a Tangent