Sarah+G's+page

Sarah G. =]

Phase 1 Abraham bar Hiyya Ha-Nasi Abraham bar Hiyya is known for his role in the spread of the quadratic equation. He was born into the 1000 century, but died in 1136. Abraham wrote many kinds of scientific methods in the areas of astronomy, mathematics, land surveying, and calendar calculations. He was a Spanish Jewish mathematician, astronomer, and philosopher, he was also known as a Savasorda. Ab also wrote two books in the area of Judaism and the Hebrew Bible. All of his crafts were written in Hebrew, not in Judaeo-Arabic. This made him one of the first people to use of the Hebrew language for scientific purposes. He also worked with Plato of Tivoli in the translating the scientific works from Arabic into Latin. Many researchers have come to believe that he was spanish. Even though they think that they do believe he spent many years in Southern France. http://en.wikipedia.org/wiki/Abraham_bar_Hiyya

Yang Hui Yang Hui was born in the 1200 century. He was a mathematician of the Chinese race. He was from the Qiantang, which was the modern Hangzhou. This was the province during the late Song Dynasty. He worked on many things this includes; magic squares, magic circles and the binomial theorem.

He is best known for his help of presenting the //Yang Hui's Triangle.// The triangle was the exactly like Pascal's triangle. The mathematician prior to Yang, Jia Xian, was the one who came upon it. About the time of 1275 he had published 2 mathematical books. They are known as Xugu Zhaiqi Suanfa, and Sunafa Tongbian Benmo. Yang died in 1298. http://en.wikipedia.org/wiki/Yang_Hui



Phase 2 Part 1: 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?

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) 3. 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 2 g-acceleration t-time in seconds after the projectile is released. v-velocity h- height

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)

Phase 3 The concept of solving by graphing is that, since the answers to **ax****2** **+ bx + c = 0** are the //x -intercepts of **ax****2** **+ bx + c = 0** you can look at the   //x -intercepts of the graph to find the answers to the equation. There are difficulties with solving this way, though.... 

Part Uno:



Part Dos: y=x^2+13x+12=0 (x+1)(x+12)=0 X=-1, X=-12

Part Tres: 

Phase 4