The relationship between them is complementary. Sometimes an equation can be regarded as a function, and sometimes a function can be regarded as an equation. When solving problems, we should analyze specific problems. The solution of the equation corresponds to that each point of the function is a pair of ordered numbers, and the points on the curve are a pair of coordinates and a set of solutions. They are mutually restrictive, which is the key to study this kind of problems.

By solving the equation, we can avoid the difficulty of reverse thinking and directly list the equations with the quantity to be solved. There are many forms of equations, such as one-dimensional linear equation, two-dimensional linear equation, one-dimensional quadratic equation and so on. , can also be combined into equations to solve multiple unknowns.

In mathematics, an equation is a statement containing one or more variables. Solving an equation involves determining which variables have values that make the equation valid. Variables are also called unknowns, and the value of the unknowns satisfying the equation is called the solution of the equation.

Extended data:

An equation must be an equation, but an equation is not necessarily an equation.

Example: a+b= 13 conforms to the equation, and there are unknowns. This is an equation and an equation.

1+ 1=2 , 100× 100= 10000。 These two formulas are consistent with the equation, but there are no unknowns, so they are not equations.

In the definition, the equation must be an equation, but there can be other equations, such as 1+ 1 = 2,100×10000 =10000, all of which are equations. Obviously, the range of the equation is larger.