Constant is a fixed value. For example, the ratio of the circumference to the diameter of a circle is π, and the expansion coefficient of iron is 0.0000 12. Constant is a name with a certain meaning, which is used to replace numbers or strings, and its value never changes. In mathematics, the capital letter "c" is usually used to represent a constant.

In physics, many measured values are called constants. For example, the coefficient of universal gravitation and the acceleration of surface gravity. However, some studies show that some of these constants are not constants, so they are called "indefinite constants" and "non-constant constants".

Tips for learning mathematics

1, you should be good at thinking when learning mathematics, and the answers you come up with are far more impressive than those others say.

2. Do a good preview before class, so that we can better digest and absorb the unknown knowledge points in math class.

3, the mathematical formula must be memorized, and it must be deduced and can be deduced.

4. The most basic thing to learn mathematics well is to master the knowledge points of textbooks and exercises after class.

5. 80% of the scores in mathematics come from the basic knowledge, and 20% of the scores are difficult, so it is not difficult to test 120.

6. Mathematics needs to be done by heart. It is difficult for impetuous people to learn math well. Doing the problem in a down-to-earth manner is the last word.

Extended data:

Unlike most physical constants, the definition of mathematical constants has nothing to do with all physical measurements. Mathematical constants are usually elements of real or complex fields. Mathematical constants can be called definable numbers (usually computable).

Other alternative representations can be found in mathematical constants (arranged by continued fraction), which are constants with constant values, as opposed to variables. (Constant refers to a number greater than zero)