We can set two numbers as A and B, the product of A and B is a×b, and the sum of A and B is A+B. If the product of A and B is greater than the sum of A and B, a×b >；; A+b, we can arrange it as (a- 1)>b(b- 1). If the product of a and b is less than the sum of a and b, it is a× b.
For all positive numbers A and B, when a=b, the product of two numbers and the sum of two numbers are equal; When a is not equal to b, the product of two numbers and the sum of two numbers are not equal.
If A is greater than B, then A's contribution is greater than B, so a×b is greater than (a+b). Conversely, if A is less than B, then A's contribution is less than B, so a×b is less than (a+b).
Methods of learning mathematics:
1, systematic learning: in the process of learning mathematics, we should divide the knowledge points of mathematics into different modules, and then systematically learn and master them according to the modules. This method can help us better understand the knowledge system of mathematics, grasp the connections and differences between various knowledge points, and improve learning efficiency.
2. Problem solving: Mathematics is a highly applied subject, and problem solving is an important way to master mathematical knowledge. It is necessary to constantly consolidate and deepen the understanding of knowledge points in the process of doing problems, and at the same time master the problem-solving methods and skills of various types of questions. In addition, doing problems can also help us improve our thinking ability, problem-solving ability and computing ability.
3. Positive thinking: Learning mathematics is not only memorizing formulas and solving problems, but also requires positive thinking and exploration. We should ask more questions, think more, explore more, and deeply understand the essence and significance of mathematical concepts and formulas, as well as their application in solving practical problems. In addition, we should also try thinking modes such as multiple solutions to one question and changeable questions to improve our thinking ability and innovation ability.