First, direct input of input method: the input method directly inputs "square", and can input "?" This symbol.
Second, special symbol input: Take Microsoft input method as an example. Press ctrl+shift+b to pop up the symbol window, select the symbol, and select mathematics. Find "?" In the drop-down scroll bar. Pick whatever you want.
Third, shortcut key input: Take WPS as an example, enter m2 in the document; Select the letter 2 to be marked, and press the shortcut key ctrl+shift+= the number 2 will become superscript. The above three methods are very quick and convenient.
Square meters (m? , English: square? M) is the metric unit of area. It is defined as the area of a square with a side length of 1 m. In life, square meters are usually referred to as "square meters" for short. Hongkong and Taiwan Province are called "square meters". The area of a square with a side length of 1 m is defined as 1 m2. If the area of a plane with any shape is equivalent to the area of a square with a side length of 1 m, it is also called 1 m2.
In the investigation of biological population density, 1 square meter is often used as the sampling unit when a herb is taken as the investigation object. When the sampling area is close to a square. Commonly used five-point sampling method. That is, the average number of individuals of a certain herb in 5 quadrats 1 m square is taken as the population density of the investigated plants in this area.
The benefits of learning mathematics
People who are good at math are relatively smart and savvy, and they can show their advantages in dealing with people. The faster you think, the more ways and ideas you have. Cambridge, majoring in financial mathematics at Carnegie Mellon University in the United States, said that studying mathematics has brought her mental exercise and made me pay more attention to the rigor of thinking in my life.
For example, before solving a problem, I like to divide it into several sections, and each section is divided into several steps, so that I can dig slowly like a branch instead of thinking in confusion in front of a pile of data. Mathematics is the foundation of other disciplines, and it is easier for people who learn mathematics well to get into other disciplines. Learning software, computer, finance and other engineering majors is even more handy.
Can manage money better than others. The application of mathematics in life is everywhere. Nowadays, the society is already an information society, and mathematical knowledge is used in financial management and computers. Warren Buffett is very powerful, but Buffett's power is also based on mathematics. Buffett's decision-making process is actually the method of using subjective probability.