In mathematics, e refers to a mathematical constant, the base of natural logarithmic function, an infinite acyclic decimal and a transcendental number, and its value is about 2.718281828459045. The important aspect of exponential function with base E is that its function is equal to its derivative.
Transcendental numbers mainly include natural constants e and pi. The popularity of natural constants is much lower than pi, because pi is easier to satisfy in real life, while natural constants are not commonly used in daily life. Natural constants are usually the base of power and logarithm in formulas. Natural constants are usually used as the base of logarithm in formulas.
In the scientific counting method, in order to make the formula simple, it can be expressed in a format with "e". For example, 1.03 multiplied by the eighth power of 10 can be abbreviated as "1.03E+08", where "e" is the abbreviation of index.
In the scientific counting method, in order to make the formula simple, it can be expressed in a format with "e". When expressed in this format, the number before e and the number after E+ should be accurate to ten digits (the digits are not enough to add 0 at the end), for example, 7.8 times the seventh power of 10, which is generally written as 7.8x10 7 and abbreviated as "7.8E+07".
Mathematical space:
The study of space originated from Euclidean geometry. Trigonometry combines space and numbers, including the famous Pythagorean theorem, trigonometric function and so on. Now the research on space is extended to higher dimensional geometry, non-Euclidean geometry, and? Topology, graph theory. Numbers and spaces play an important role in analytic geometry, differential geometry and algebraic geometry.
In differential geometry, there are concepts such as fiber bundle and calculation on manifold. Algebraic geometry has the description of geometric objects such as polynomial equation solution set, which combines the concepts of number and space; There is also the study of topological groups, which combines structure and space. Lie groups are used to study space, structure and change.