dong ren yang cong shu (1 résultats)

paperback. Etat : New. Ship out in 2 business day, And Fast shipping, Free Tracking number will be provided after the shipment.Pub Date: 2004 Pages: 2004 Publisher: Sichuan Science and Technology Basic information title: ASeries of young scientists Series the Little Scientists removal of math Pearl Original: 22 yuan Author: Dong Renyang Series Editor: Dongren Wei Zhao Jian Press: Sichuan Science and Technology Publication Date: 2004 January ISBN: 9.787.536.453.685 Words: the Page 2004 -08-01 Edition: Binding: Folio: Product ID: Wing Garden: 300104 Sichuan Editor's No Summary farming civilization initial. China. Egypt. Babylon. India and other countries together. composed of four ancient civilizations; technology has been at forefront of the world. Only this time. the world leader in the technology sector in Egypt. World 2000 years ago. an explosion of knowledge. a leader in the knowledge explosion initially. Greece and China. Soon. China will throw off Greece. come to the forefront of the world. to play the leading role. China for the human contribution to the four great inventions and many other important inventions. The mysterious discovery of the directory number of Arabic numerals and the invention of the operation symbol 0 and wonderful 9 constant and e -1 - the invention of imaginary and complex infinity - infinity and infinitesimal observation and thinking. Observed an interesting digital palindromic nature. Lost Diophantine mystery. Overthrow Euler a guess. Can define i2 = O. or i2 = +1. the new complex geometric triangle interior angles must be equal to 180 - parallel axiom discussion and the discovery of non-Euclidean geometry ramble coordinates - the birth of projective geometry puzzle analytic geometry origami Geometer's Sketchpad - on the computer for geometry question an observation and thinking. Proportion of the items of the rectangular area is square. The equilateral triangle cut into squares 3 4 spell. Play jigsaw puzzle. Fold tetrahedral and hexahedral 5. Folding elliptical and hyperbolic) modern mathematics of fractal geometry Chaos game theory - do Almighty strategist topology mathematical experimental observation and thinking 1. Simple random fractal graphics 2. Cut a trefoil knot. Math binary digital age in the life of the Seven Bridges Global Positioning System (GPS) and geographic information system (GIS) Talking about mathematics and music art gear spiral curve ubiquitous gyro - Bee - genius mathematician observed around sentinel rotation and thinking. Observed mechanical clock gear and pendulum 2. Gyro toy 3. The the best apex angle of the sloping roof . of Dongren Yang. Chongqing City. in 1960. graduated from the Beijing Institute of Aeronautics. Work in the Chengfa Group. Researcher level senior tutor. Author of vector matrix tool calculation. three-dimensional mechanical design software MDT based on applications and techniques 6. Digest Arabic numerals and arithmetic symbols invention mathematics can not be separated from the number and shape. The our ancestors extremely slow process of knowing the number of 100 million years before the abstract number concept. Number of concept formation. number systems and operations greatly accelerate the development process. Today. digital and digital computing has permeated our culture. everywhere. Science. technology and economy all depend on the number of use. it is difficult to imagine that no-digital and digital computing. our lives would be like. Understanding of human nature is to start from the number of counts is the earliest record of human activities of their own. Humans there is no text in the past (prehistoric). count two ways: first. tie knots. knotted rope count; After the development of the book contract. that is portrayed in wood. bamboo or bone engraved with the mark of the count. Text later. people invented a lot of counting. Almost every nation has its own notation symbols. such as the Sumerians. the Babylonians. the Egyptians. the Mayans. the Incas. Greeks.