1. Draw two rectangles first, and draw a cylinder at the joint position in the middle.
2. In the book, draw four right-angle line segments.
Write the numbers "1, 2,3" on the surface of the book.
The surface of this book is painted blue.
5. The seam position of the book is painted red, and one side of the paper inside is painted yellow, thus completing the drawing method of the math book.
Mathematics (English: Mathematics, from the ancient Greek μ θ η μ α (má th ē ma); Often abbreviated as math or maths) is a discipline that studies concepts such as quantity, structure, change, space and information, and belongs to a formal science from a certain point of view.
Mathematics is produced by counting, calculating, measuring and observing the shape and motion of objects through abstract and logical reasoning. In many countries and regions, mathematics has become a part of education. It is applied in different fields, including science, engineering, medicine, economy and finance. Mathematicians also study pure mathematics, which is the substantive content of mathematics itself and does not aim at any practical application.
Mathematical logic focuses on putting mathematics on a solid axiomatic framework and studying the results of this framework. As far as it is concerned, it is the origin of Godel's second incompleteness theorem, which is perhaps the most widely circulated achievement in logic. Modern logic is divided into recursion theory, model theory and proof theory, which are closely related to theoretical computer science.