14 618 stories, what are the examples of 0 618 in life

Fashionable models with graceful postures and slender bodies and dancers with similar proportions of legs to body are also approximated. Any pattern with such proportions will look harmonious, balanced, comfortable, and have a sense of beauty. The paper used in life is the first rectangle, such a rectangle makes people look comfortable and pleasing to the eye, and the paper obtained by the regular cutting method, regardless of its size, such as for, 8 open, 16 open, 32 open, etc., is still an approximate **rectangle.

The proportions of the human face.

The proportions of the figure of the pillars of the goddess of the Parthenon Temple.

If the ratio of the length of the two segments is, it becomes the ** ratio. If the lower half of a person's body is x meters long and the upper half is meters long, the ratio of the upper and lower body is ** proportion. Another such as a rectangle, the length is x meters, the width is meters, the ratio of the width to the length of the rectangle is ** ratio.

It is said that the things that look particularly good and are pleasing to the eye I hope it can help you

The 14 dormitories of Shenyang Agricultural University are located on the campus of the College of Science and Technology of Shenyang Agricultural University opposite the main campus, and are four-person dormitories.

Navel, if people are born more normally, they use the navel as the ** dividing point.

The ratio of length to length is equal to the ratio of full length to length.

I am also a freshman in the 14th house of Wuda Fengyuan, and what I just learned is that there is air conditioning, a private bathroom, hot water, and a wardrobe. Sleeps 6 people, bunk beds.

It's a new building and it should be clean.

This year, about May and June, the construction just started, it was built by demolishing the original logistics office building, the terrain is relatively low, near the maple three maple one, well, it is really a hillside or a valley place, if you look back, there may be native woods, but the maple garden is the closest to the teaching area.

Boys' dormitory, huh? I have lived in 13 buildings, 14 buildings are similar to 13 buildings, and the old man in charge of the dormitory does not know if he has changed. Anyway, the dormitories of the Faculty of Informatics are now air-conditioned and hot-water, so there is no need to worry about anything. The conditions aren't the best, but they're certainly not bad.

This lesson is the first lesson of Chapter 2, Chapter 5, Subsection 1 of the 9th grade edition of Beijing Normal University. The content is the application of one-dimensional quadratic equations in geometry and practical life. 2.

The position and role of this lesson in the textbook: This chapter of "Unary Quadratic Equations" is the continuation and development of the knowledge learned before, especially the in-depth and development of unary equations, binary equations (groups), etc., and is the comprehensive application of equation knowledge. Learning this part of the knowledge well lays a solid foundation for learning the knowledge of one-dimensional quadratic functions in the ninth class, which is the premise of subsequent learning.

This section is the practical application of the one-dimensional quadratic equation and is the last part of the one-element quadratic equation. Of course, although this is the last part, in the process of exploring the solution of the quadratic equation in the hospital in sections 2 4 of this chapter, some practical problems about the unary quadratic equation have already been involved, so students are not unfamiliar with this and have accumulated some experience. 3.

Teaching Objectives (1) Experience the process of analyzing quantitative relationships in specific problems, establishing equation models and solving problems, recognize the importance of equation models, and summarize the general steps of using equations to solve practical problems. (2) Through the solution of column equations, further improve the ability of logical thinking and the ability to analyze and solve problems. 4.

The focus of the textbook is to master the methods of using equations to solve practical problems. 5.

The difficulty of the textbook: building an equation model. 2. Teachings:

1) Introduce new lessons, implicitly implicit teaching objectives 1Observation**: The Pyramid of Khufu in ancient Egypt, the Parthenon in ancient Greece, and the Oriental Pearl TV Tower in Shanghai are all famous buildings in ancient and modern Chinese and foreign history.

2.Explanation: Do you want to know how to find the ratio in the division As shown in the figure, the point c divides the line segment AB into two line segments AC and BC, if then the line segment AB is divided by the point C**, the point C is called the **split point of the line segment AB, and the ratio between AC and AB is called the ratio (why is the ratio equal to the equation can help us solve this problem Let's do it together.

Solution: From =, ac2=ab·cb Let ab=1, ac=x, then cb=1-x, substitute into the above equation, x2=1 (1-x) i.e.: x2+x-1=0 Solve this equation, get x1= , x2= (not in line with the topic, round) So:

**Ratio = (2) What other problems can be solved by a quadratic equation Example 1: As shown in the figure, a naval base is located at A, with a target B 200 nautical miles due south and an important target C. 200 nautical miles due east of BIsland D is located at the midpoint of AC, and there is a supply dock on the island; Isle F is located on BC and is located due south of Isle D.

A ** departs along A and cruises at a constant speed via B to C, and a supply ship departs from D at the same time and sails in a straight line in a south-westward direction at a constant speed, intending to deliver a batch of items**. (1) How many nautical miles apart from Island D and Island F.

Just remember the formula: Total Profit = Unit Price Profit * Quantity.

For example, a certain clothing can sell an average of 20 pieces per day, and each piece makes a profit of 44 yuan. If the price of each piece is reduced by 5 yuan, 5 more pieces can be sold per day. If you want to make a profit of 1,600 yuan per day, how much should you reduce per piece?

Solution: Reduced by x yuan.

44-x) (20+x 5*5)=1600 x 1*5 Explanation: For example, drop 5 yuan and sell 5 more pieces.

Drop 10 yuan More sales 2 * 5 = 10 pieces, that is to say, how many 5 yuan is reduced is equivalent to 5 more clothes sold. Then it has dropped x yuan, and you must know how many more pieces have been sold. It is equal to x 5*5

Pay attention to comprehension. When you get older, you will naturally understand.