06-240/Homework Assignment 2
Read sections 1.1 through 1.3 in our textbook, and solve the following problems:
- Problems 3a and 3bcd on page 6, problems 1, 7, 18, 19 and 21 on pages 14-16 and problems 8, 9, 11 and 19 on pages 20-21. You need to submit only the underlined problems.
- Note that the numbers 16 − 1 = 0, 26 − 1 = 63, 36 − 1 = 728, 46 − 1 = 4,095, 56 − 1 = 15,624 and 66 − 1 = 117,648 are all divisible by 7. The following four part exercise explains that this is not a coincidence. But first, let p be some odd prime number and let be the field with p elements as defined in class.
- Prove that the product is a non-zero element of .
- Let a be a non-zero element of . Prove that the sets and are the same (though their elements may be listed here in a different order).
- With a and b as in the previous two parts, show that bap − 1 = b in , and therefore ap − 1 = 1 in .
- How does this explain the fact that 46 − 1 is divisible by 7?
You don't need to submit this exercise at all, but you will learn a lot by doing it!
This assignment is due at the tutorials on Thursday September 28. Here and everywhere, neatness counts!! You may be brilliant and you may mean just the right things, but if the teaching assistants will be having hard time deciphering your work they will give up and assume it is wrong.
An email I got -
Date: Mon, 18 Sep 2006 13:53:19 -0300 From: Sadie Bowman <firstname.lastname@example.org> To: email@example.com Subject: "Calculus: The Musical!" Greetings! Please read and feel free to forward/distribute amongst your colleagues and students. I am contacting you from Matheatre, a performance duo originating in Minneapolis, Minnesota. We are excited to announce that our newest touring show, "Calculus: The Musical!" is scheduled to perform a limited engagement in Toronto September 28-30! "Calculus: The Musical" is a comic "review" of the concepts and history of calculus. Using musical parodies that span genres from light opera to hip-hop, the quest for the instantaneous rate of change and the area under the curve comes to life--through song! Written by a licensed math teacher, "Calculus: The Musical!" puts the "edge" back in "education!" "Calculus: The Musical!" Thursday, September 28, 7pm Friday, September 29, 7pm Saturday, September 30, 8:30pm Unit 102 Theatre 46 Noble Street (near the intersection of Dufferin and Queen) Tickets: $10.00 Visit our website for more details: http://www.ftmax.com/matheatre Thank you and we hope to see you there!