1, write the formula directly. For example, we can say that 5 plus 3 is: 5+3=8. In this formula, we use the plus sign+to indicate the addition of two numbers, and the equal sign = to indicate that the calculation result on the left is equal to the number on the right.
2. Use language to express the formula. For example, we can express 5 plus 3 as: 5 plus 3 makes 8. In this expression, we use words to describe the addition operation and point out that the result of the operation is 8.
Although these two methods express the same formula in different forms, they are equivalent. Whether using symbols or language, we can accurately describe and calculate mathematical problems. Therefore, in practical application, we can use different methods to express and calculate formulas according to needs.
Besides addition and equal sign, there are many other symbols and operations in mathematics, such as subtraction symbol-,multiplication symbol ×, division symbol ÷ and so on. These symbols and operations can be used to represent and calculate various mathematical problems. At the same time, we can also use natural language to describe and operate these problems, such as 10 MINUS 4 to get 6, 3 times 4 to get 12 and so on.
The function of the formula:
1, calculation: the most basic function of the formula is to carry out mathematical calculation. By using different mathematical symbols and operations, we can combine numbers and other mathematical objects into complex formulas and calculate the results. For example, we can calculate the sum, difference, product or quotient of two numbers with formulas such as addition, subtraction, multiplication and division.
2. Reasoning: Formulas can also be used for mathematical reasoning and proof. Using formulas, mathematical problems can be turned into a combination of symbols and logic, and solved by reasoning and proof. For example, we can use formulas and logical proofs to prove a mathematical theorem or deduce a mathematical formula.
3. Modeling: Formulas can also be used to build mathematical models and solve various practical problems. These problems can be better understood and solved by transforming practical problems into mathematical problems and expressing and solving them with formulas. For example, we can use formulas to model and solve various practical problems such as engineering, physics, economy and biology.
4. Communication: Formulas are also important tools for mathematical communication and expression. By using formulas, we can simply express and communicate complex mathematical problems, making it easier for others to understand and solve these problems. For example, in academic papers, teaching materials, research reports and other documents, formulas are indispensable expression tools.