Specific content:

Golden ratio and plant morphology: Golden ratio is an important proportional relationship in mathematics and is also widely used in plant morphology research. The golden ratio means that the ratio of two numbers is equal to the ratio of their sum to a larger number. In plants, the golden ratio can be reflected in the arrangement of branches and leaves.

For example, many plants follow the golden angle, that is, the angle between branches and trunks is about 137.5 degrees. This branching method can make plants make full use of space, receive sunlight and water to the maximum extent, and improve photosynthesis efficiency.

Introduction to mathematics:

Mathematics is a subject that studies concepts such as quantity, structure, change, space and information. Mathematics is a universal means for human beings to strictly describe and deduce the abstract structure and mode of things, and can be applied to any problem in the real world. All mathematical objects are artificially defined in essence. In this sense, mathematics belongs to formal science, not natural science.

Different mathematicians and philosophers have a series of views on the exact scope and definition of mathematics. Mathematics plays an irreplaceable role in the development of human history and social life, and it is also an indispensable basic tool for studying and studying modern science and technology.

Mathematical terms:

1, arrangement

Arrangement, generally speaking, m(m≤n) elements are taken from n different elements and arranged in a column in a certain order, which is called the arrangement of taking m elements from n elements. In particular, when m=n, this arrangement is called full arrangement.

2. Solution set

Solution set is a mathematical term, which refers to all solutions of an equation (group) or inequality (group) as a set of elements, and is called the solution set of the equation (group) or inequality (group). There are three ways to express the solution set: enumeration, description and illustration. As an important tool in mathematics, solution set has a wide range of applications in mathematics.

3. Equation

An equation refers to an equation containing unknowns. It is an equation that represents the equal relationship between two mathematical expressions (such as two numbers, functions, quantities and operations), and the value of the unknown quantity that makes the equation hold is called "solution" or "root". The process of finding the solution of the equation is called "solving the equation".

4. Cubic

Cubes are also called cubes. The product of three identical numbers is called the cube of this number. For example, 5×5×5 is called the cube of 5, and it is recorded as 5? .