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Understanding math has never been easier. Combining bold, elegant graphics with easy-to-understand text, Simply Math is the perfect introduction to the subject for those who are short on time but hungry for knowledge. Covering more than 80 key mathematical theories from prime numbers and matrices to logarithms and quadratic equations, each pared-back, single-page entry explains the concept more clearly than ever before. Organized by major themes -...

Optimize your brainpower and performance with practical tools and skills The human brain is constantly rewiring its 160 billion cells, continually and imperceptibly changing the way we think. Because of that, we can fundamentally change the way our brains work-for the better. Sort Your Brain Out shows you how to re-wire your brain to be more creative, make better decisions, improve your mood and memory, manage stress, and stave off senility. The book...

WINNER 2009 CHOICE AWARD OUTSTANDING ACADEMIC TITLE! The typical introduction to physics leaves readers with the impression that physics is about 30 different, unconnected topics such as motion, forces, gravity, electricity, light, heat, energy, and atoms. More often than not, these readers are left to conclude that physics is mostly about boring, lifeless numbers. Questioning the Universe: Concepts in Physics offers the nonscientist an alternative...

"Ninety percent of your brain cells are glial cells - and, until recently, scientists thought they did little more than hold your brain together. New research reveals that they might hold the key to understanding intelligence, treating psychiatric disorders and brain injuries, and maybe even curing Alzheimer's, Parkinson's, and Lou Gehrig's disease. In The Root of Thought, brain scientist Andrew Koob reveals what we've just learned about these remarkable...

Unravel the secrets of the universe and untangle cutting-edge physics Yes, you actually can understand quantum physics! String Theory For Dummies is a beginner's guide, and we make it fun to find out about the all the recent trends and theories in physics, including the basics of string theory, with friendly explanations. Build a foundation of physics knowledge, understand the various string theories and the math behind them, and hear what the opponents...

What every self-employed person needs to know about their taxes! If you're self-employed, chances are the majority of your time is spent finding new customers or clients, servicing existing ones, and handling each and every aspect of your business. Freelancers, independent contractors, gig economy participants, and other individuals working for themselves need to be aware of their responsibilities when it comes to paying their taxes. Even if you have...