In fact, there are mathematics everywhere in our lives, such as the wonderful circle.
The circle is the most common figure in life, and people use it almost everywhere. In the car, on the road, at home, and even in the air, you can always see the traces of circles.
One of the great advantages of a circle is that it has no edges and corners. Why can a car run very fast, but the people sitting in it don't feel bumpy? This is because the wheels of a car are round. Why is bowling a sphere instead of a cube or cuboid when bowling? Because the friction between the sphere and the ground is the smallest, the speed slows down for the longest time, and the speed is not easy to change. Because there are no edges and corners, people call circles and spheres the most beautiful plane figures and the most beautiful three-dimensional figures.
The circle is considered to be the most economical figure. As we all know, the area of a circle is larger than any other shape at the same time. According to this reason, people designed a round manhole cover, because when the round manhole cover is placed on the manhole perpendicular to the ground, it will not fall into the manhole like a square or rectangular manhole cover, but will be firmly stuck on it. How can such lovely graphics not be favored by people?
In addition to the circle, there are some three-dimensional figures related to the circle, such as cylinders and spheres, which also play an important role! Under the condition of the same material area, the cylinder has the largest volume and the largest supporting force. Trunks, bamboos, buckets and other things all use cylinders. There are decimal points and mathematics, which are everywhere in our lives. Gauss quadrature, planting trees ... these wonderful mathematical laws surprise us. Let's find a wonderful digital journey together!
Decimals are everywhere in weight and price. Anywhere, moving to the right represents expansion, and moving to the left represents contraction. This magical decimal point has opened our digital journey today.
In our measurement and calculation, sometimes we can't get integers, so there is a decimal point here. The decimal point has a huge "right". It has a decimal part on the right and an integer part on the left. It has a high prestige in the digital world, because its movement has changed the size of numbers. There are two ways to change the size of a number: 1, change the position of the number, and 2, move the decimal point.
In life, the decimal point becomes a number and a compound number. Decimal point not only changes the size of a number by moving the decimal point, but also changes the size of a number by multiplication and division. Multiplication means moving to the right, and moving one digit will expand 10 times. Except for the left shift, the shift by one bit is reduced by 10 times.
The decimal point is really magical, and there are many magical laws in life. Let's explore together!