Section 3.4
Kyle Matthews
A penny saved is a penny earned.
When saving money we generally deposit relatively small quantities over
long periods of time. An account in which a xed amount of money depos
Homework 8.6
Homework 8.6 goals:
Know what the Casear Cipher is and how to use it.
Know what the Ane Cipher is and how to use it.
Know what an inverse is mod n and how to nd it.
1. Do these problem
Homework 8.7
Homework 8.7 goals:
Know what the Hill Cipher is and how to use it.
1. Do these problems in section 8.7 of the book: 1, 2, 3, 4, 5, 6, 7, 8
2. Suppose a computer hacker gets a hold of a
Homework 8.2
Homework 8.2 goals:
Understand what modulo means
Understand what it means for two numbers to be congruent modulo n.
Know what the properties of modulo arithmetic are, and how to use th
Homework 8.1
Homework 8.1 goals:
Know what it means when something divides something.
Know the dierence between prime and composite numbers.
Be able to nd the prime factorization of simple composit
Homework 3.2
Homework 3.2 goals:
Know what a simple interest is and how to calculate it.
1. Do these problems in section 3.2 in the book: 1,2, 7, 8, 11, 12, 19-22
2. Create your own word problem that
Homework 3.3
Homework 3.3 goals:
Understand what a compounding period is.
Understand how compounding interest is derived.
Understand how to use the compounding interest formula.
Be able to solve f
Section 3.1
Ken Ueda
If you want to know what God thinks about money, just look at the people he
gave it to. - Dorothy Parker
The story of money is one that is long and goes back before history. The
r
Section 3.2
Kyle Matthews
Take no usury or interest from him; but fear your God, that your brother may
live with you. You shall not lend him your money for usury, nor lend him your
food at a prot. -Le
Section 8.6
Ken Ueda
The Magic Words are Squeamish Ossifrage.
Cryptology or cryptography is the study of codes and encryptions. In this
case, one is not a pseudoscientic version of the other. Secret c
Section 8.7
Kyle Matthews
There are two types of encryption: one that will prevent your sister from reading your diary and one that will prevent your government. -Bruce Schneier
In the previous sectio
Section 8.2
Kyle Matthews
Mathematicians do not study objects, but the relations between objects; to
them it is a matter of indierence if these objects are replaced by others, provided that the relati
Section 8.1
Ken Ueda
Mathematics is the queen of the sciences and number-theory the queen of
mathematics. -Carl Friedrick Gauss
Let us begin with a brief history of elementary number theory. Elementar
Section 3.3
Ken Ueda
Dont think money does everything or you are going to end up doing everything for money. - Voltaire
Many kinds of investments earn interest that is compounded at regular intervals.
Homework 3.1
Homework 3.1 goals:
Know how to algebraically manipulate exponents.
Understand what a logarithm is.
Be able to algebraically manipulate logarithms.
1. Do these problems in section 3.1