Math in my life

Math in my life

The exponential growth

The exponential growth occurs in the case, if a value is increasing in proportion to its value, for example by doubling: 1, 2, 4, 8, 16, 32, 64 ... When the value increases exponentially, the more it gets, the faster growing, so just after a few steps she can achieve tremendous value. Illustration from the book. Imagine a bottle of bacteria, whose numbers doubled every minute. At 11:00 in the bottle is one bacterium to 12:00 and bottle will be completely filled with bacteria. "If you were a normal bacterium that lives in the bottle - Asked Bartlett - at which time you would realize that space is about to be left?" Amazingly, at 11:55 bottle seems almost empty: it filled by only 3 percent.

The phenomenon first digit

​Write down of any newspaper all the numbers that are there. Now note the first figure in these numbers. You will see that the numbers beginning with the digit 1, the most common; followed by the number, where the first number 2, then 3 - and so on until the number 9, which is used at the beginning of all numbers less. It's really incredible.In 1938, physicist Frank Benford discovered the phenomenon of the first digit, drawing attention to potrepannost pages in the book with tables of logarithms. He then calculated the distribution of first digits in other sets of data: the address of several hundred people from biographical handbook, the atomic weight of chemical elements, baseball statistics, matches and so on. In most cases, the results were similar to the expected distribution.

Did you know that in Asian hotels found no floor number four? In the cabin there is no fourth row, and the company is not producing products with the Quartet in the title. It's most common prejudice about the numbers associated with the game of words.

In Japanese, Cantonese and Mandarin Chinese as well as Korean word "four» (shi, sei, si, sa) sounds exactly like the word denoting death. That is why bilingual strongly avoid the number four.

The number four is associated with death so much that it has become a communication burden is inevitable. According to observations in the US, 4th of every month among people of Japanese and Chinese descent number of heart attack deaths is increasing dramatically.

Math is very important in our life