The dimensionality of the system state vector described by independent variables is unique.

A change in one quantity of the independent variable will not cause changes in other quantities other than the dependent variable. Only when a certain physical quantity is expressed by an independent variable, the functional relationship given by it is correct

The dependent variable. Changes in one quantity will cause changes in other quantities other than the dependent variable. Treating dependent variables as independent variables is a taboo in determining the relationship between physical quantities. Variables refer to numbers that have no fixed value and can be changed. There are many types of constants, and each type has a data type, including integer, character, floating point, enumeration and other constants. Extended information

Take Tesla as an example. What is actually being integrated is the car dealers. In the past, a lot of profits in the industry chain were lost in the distribution link, but Tesla has effectively avoided this through integration. Got this.

Let’s look at Space The quotation of this single subcontractor will be a monopoly high price, so traditional aerospace companies will face profitability problems. Vertical integration is an important and neglected sector in new technologies. If you pay a little attention, you will have unexpected breakthroughs.