The Trigonometry And Pre-Calculus Tutor is a 5 hour DVD course geared to fully prepare a student to enter university level Calculus. Most students that have trouble with Calculus discover quickly that the root cause of their difficulty is actually that they have never mastered essential material in Trigonometry. For instance, a Calculus textbook will assume that the student is comfortable converting between degrees and radians and can use the unit circle to mentally calculate the Sin of an angle without a calculator. These topics and many other essential concepts are presented in this DVD course with exceptional clarity so that the student will feel well prepared to move into Calculus and Physics.

Description: Matrix Algebra usually gives students problems in the beginning because although it has applications in algebra, it looks completely different from any algebra the student has used up to this point. The material on these DVDs is covered in most advanced high school algebra courses and is definitely covered in a university linear algebra course. This DVD tutorial lends help in matrix algebra just as if you hired a personal tutor in your home. Every matrix algebra video lesson is taught by fully worked example problems that help you not only do well in class - but truly understand the material. If you need linear algebra help that will increase your understanding and improve your grades in linear algebra quickly the Matrix Algebra Tutor will provide the tools you need to succeed.

In How Math Explains the World, mathematician Stein reveals how seemingly arcane mathematical investigations and discoveries have led to bigger, more world-shaking insights into the nature of our world. In the four main sections of the book, Stein tells the stories of the mathematical thinkers who discerned some of the most fundamental aspects of our universe. From their successes and failures, delusions, and even duels, the trajectories of their innovations-and their impact on society-are traced in this fascinating narrative. Quantum mechanics, space-time, chaos theory and the workings of complex systems, and the impossibility of a "perfect" democracy are all here. Stein's book is both mind-bending and practical, as he explains the best way for a salesman to plan a trip, examines why any thought you could have is imbedded in the number n , and-perhaps most importantly-answers one of the modern world's toughest questions: why the garage can never get your car repaired on time.

A fascinating journey into the mind-bending world of prime numbers
Cicadas of the genus Magicicada appear once every 7, 13, or 17 years. Is it just a coincidence that these are all prime numbers? How do twin primes differ from cousin primes, and what on earth (or in the mind of a mathematician) could be sexy about prime numbers? What did Albert Wilansky find so fascinating about his brother-in-law's phone number?