August 12, 2006 Professor Roger Lautzenheiser, Editor-in-chief Undergraduate Mathematics Journal Department of Mathematics, CM 135 Rose-Hulman Institute of Technology 5500 Wabash Avenue Terre Haute, IN 47803 Dear Prof. Lautzenheiser: As the supervisor of Mr. Justin Taylor for the course – Undergraduate Mathematics Independent Study, I am writing to verify the paper – Heat Conduction in a Rod with a Non-uniform Thermal Diffusivity – is Mr. Taylor’s research result of this course. He took this course in Spring 2006 at Southeast Missouri State University. His main result is to determine an approximated solution to a heat equation with a non-constant thermal diffusivity. If you have any questions about his work, please feel free to contact me at the address listed below: W. Y. Chan Department of Mathematics MS6700 Southeast Missouri State University Cape Girardeau, MO 63701 Tel.: 573-651-2753 Fax: 573-986-6811 Email: wchan@semo.edu Sincerely yours, W. Y. Chan, Ph.D.