Alexis

phase 1 Liu Yi He is a third-year graduate in Departme nt of Mathematics in the University of California at Berkeley, also he studied mathematics in the School of Mathematical Sciences in Peking University at Beijing as an undergraduate. He is currently interested in three-manifolds. Also to include that Ian Agol is his advisor. http://www.ask.com/bar?q=liu+yi+math&page=1&qsrc=2417&ab=0&u=http%3A%2F%2Fmath.berkeley.edu%2F~yliu%2F Yang Hui http://www.ask.com/bar?q=Who+is+Yang+Hui%3F&page=1&qsrc=0&ab=0&u=http%3A%2F%2Fwww.gap-system.org%2F~history%2FBiographies%2FYang_Hui.html He wrote many great mathematical texts He was a contemporary of both Quin Jiushao and Li Zhi

Babylonian http://www.ask.com/bar?q=Babylonian+Mathematics&page=1&qsrc=6&ab=0&u=http%3A%2F%2Fwww-groups.dcs.st-andrews.ac.uk%2F~history%2FHistTopics%2FBabylonian_and_Egyptian.html

The region had been the centre of the Sumerian civilisation which flourished before 3500 BC. This was an advanced civilisation building cities and supporting the people with irrigation systems, a legal system, administration, and even a postal service. Writing developed and counting was based on a sexagesimal system, that is to say base 60. Around 2300 BC the Akkadians invaded the area and for some time the more backward culture of the Akkadians mixed with the more advanced culture of the Sumerians. The Akkadians invented the abacus as a tool for counting and they developed somewhat clumsy methods of arithmetic with addition, subtraction, multiplication and division all playing a part. The Sumerians, however, revolted against Akkadian rule and by 2100 BC they were back in control. However the Babylonian civilisation, whose mathematics is the subject of this article, replaced that of the Sumerians from around 2000 BC The Babylonians were a Semitic people who invaded Mesopotamia defeating the Sumerians and by about 1900 BC establishing their capital at Babylon. The Sumerians had developed an abstract form of writing based on cuneiform (i.e. wedge-shaped) symbols. Their symbols were written on wet clay tablets which were baked in the hot sun and many thousands of these tablets have survived to this day. It was the use of a stylus on a clay medium that led to the use of cuneiform symbols since curved lines could not be drawn. The later Babylonians adopted the same style of cuneiform writing on clay tablets.

phase 2 1. Suppose a farmer has /come ask me/ yards of fencing to enclose a rectangular field. What is the largest area that the farmer can enclose? (10 points)

2. The owner of a ranch decides to enclose a rectangular region with /come ask me/ feet of fencing. To help the fencing cover more land, he plans to use one side of his barn as part of the enclosed region. What is the maximum area the rancher can enclose? (10 points)

A farmer wishes to enclose a rectangular region bordering a river using /come ask me/ feet of fencing. He wants to divide the region into two equal parts using some of the fence material. What is the maximum area that can be enclosed with the fencing? (10 points)

Part two of Phase 2 is to solve the problems that involve projectile in motion. The formula you will be using to solve these problems is below: s(t) = –gt2 + v0t + h0 Describe what the letters g, t, v and h represent. (5 points) Here is a website that will help: []

Now use the formula and website to solve the following 2 problems. Copy and paste the problems to your wiki and explain them step by step.

1. Some fireworks are fired vertically into the air from the ground at an initial velocity of /come ask me/ feet per second. Find the highest point reached by the projectile just as it explodes. (10 points)

2. A ball is thrown vertically upward with an initial velocity of /come ask me/feet per second. If the ball started from a height of 10 feet off the ground, determine the time it will take for the ball to hit the ground. (10 points)