Zipf's law is one of the few quantitative reproducible regularities found in economics. It states that, for most countries, the size distributions of cities and of firms are power laws with a specific exponent: the number of cities and of firms with sizes greater than S is inversely proportional to S. Zipf's law also holds in many other scientific fields.
Mathical puzzles i After thinking a little, we got the answer to this puzzle , but these conversations revealed the fact that we both were much interested in various kinds of mathematical puzzles and between us knew a great many of them.
Focused, organized, and easy to follow, Glencoe Pre-Algebra shows your students how to read, write, and understand the unique language of mathematics, so they'll be prepared for every type of problem-solving and assessment situation.
In this entertaining and challenging collection of logic puzzles, Raymond Smullyan - author of Forever Undecided - continues to delight and astonish us with his gift for making available, in the thoroughly pleasurable form of puzzles, some of the most important mathematical thinking of our time.
High School Physics TutorBasic and advanced topics in physics, specifically tailored for high school students. Topics include vectors, statics, kinematics, dynamics, energy/power, impulse/momentum, hydrostatics/aerostatics, electric circuits, magnetics, and radiation. Also included are chapter introductions which review major physics principles and their applications to problem-solving.
