minus sign

简明释义

减号

英英释义

例句

1.If you add a minus sign to a positive number, it becomes negative.

如果你给一个正数加上负号，它就变成负数。

2.The minus sign in front of the temperature indicates it is below zero.

温度前面的负号表示它低于零度。

3.To find the difference, you need to place a minus sign between the two numbers.

要找到差值，你需要在两个数字之间放置一个负号。

4.When you see a minus sign, it indicates that the number is negative.

当你看到一个负号时，这表示这个数字是负的。

5.In mathematics, a minus sign is used to represent subtraction.

在数学中，负号用于表示减法。

作文

Understanding mathematical symbols is crucial for anyone studying mathematics or related fields. One of the most fundamental symbols is the minus sign, which represents subtraction or a negative value. The minus sign is usually denoted by a simple horizontal line (-), and its significance extends beyond basic arithmetic into various branches of mathematics, including algebra, calculus, and even statistics. In arithmetic, the minus sign indicates that one number should be taken away from another. For example, in the equation 5 - 3 = 2, the minus sign shows that we are subtracting 3 from 5. This simple operation forms the foundation for more complex mathematical concepts. Without understanding the minus sign, students might struggle with even the most basic calculations, leading to confusion and frustration.As students progress to algebra, the minus sign takes on additional roles. It can denote negative numbers, which are essential for understanding concepts such as debt or temperature below zero. For instance, if the temperature drops to -5 degrees Celsius, the minus sign indicates that it is five degrees below freezing. In equations, the minus sign can also affect the outcome significantly; for example, in the equation x - 4 = 0, solving for x requires an understanding that we need to add 4 to both sides, thus reversing the effect of the minus sign. In calculus, the minus sign appears in derivatives and integrals, where it can indicate direction or the nature of a function's behavior. For example, a negative derivative suggests that a function is decreasing at a certain point, which is critical for understanding graphs and their properties. Here, the minus sign is not just a symbol of subtraction but a vital indicator of change and behavior in mathematical functions.Moreover, in statistics, the minus sign plays a role in calculating deviations from the mean. When analyzing data sets, researchers often look at how far each data point deviates from the average. A negative deviation, indicated by a minus sign, shows that a particular value is below the mean, which can provide insights into trends and patterns within the data. Thus, the minus sign is integral not only in computations but also in interpreting results.In summary, the minus sign is a fundamental mathematical symbol that signifies subtraction and negative values. Its applications span across various mathematical disciplines, making it essential for anyone engaged in quantitative studies. Understanding the minus sign is not merely about recognizing its shape; it involves grasping its implications in different contexts. As students delve deeper into mathematics, they will find that the minus sign is not just a tool for calculation but a key to unlocking the complexities of mathematical reasoning. Therefore, mastering the minus sign is a step towards becoming proficient in mathematics and applying its principles effectively in real-world situations.

理解数学符号对任何学习数学或相关领域的人来说都是至关重要的。其中最基本的符号之一是负号，它表示减法或负值。负号通常用一个简单的水平线（-）来表示，它的重要性超越了基础算术，延伸到代数、微积分甚至统计学等各个数学分支。在算术中，负号表示一个数字应该从另一个数字中减去。例如，在方程5 - 3 = 2中，负号表明我们正在从5中减去3。这一简单操作构成了更复杂数学概念的基础。如果不理解负号，学生可能会在最基本的计算中遇到困难，从而导致困惑和挫折。随着学生向代数的进步，负号承担了更多的角色。它可以表示负数，这对于理解诸如债务或零度以下的温度等概念至关重要。例如，如果温度降到-5摄氏度，负号表明它低于冰点五度。在方程中，负号也可以显著影响结果；例如，在方程x - 4 = 0中，求解x需要理解我们需要在两边都加4，从而逆转负号的作用。在微积分中，负号出现在导数和积分中，它可以表示方向或函数行为的性质。例如，负导数表明某个点的函数在减少，这对于理解图形及其属性至关重要。在这里，负号不仅是减法的符号，而是数学函数变化和行为的重要指示。此外，在统计学中，负号在计算偏离均值时发挥作用。当分析数据集时，研究人员通常会查看每个数据点与平均值的偏差。负偏差由负号表示，表明特定值低于均值，这可以提供对数据中趋势和模式的洞察。因此，负号不仅在计算中是不可或缺的，而且在解释结果时也是如此。总之，负号是一个基本的数学符号，表示减法和负值。它的应用跨越各种数学学科，使其对任何从事定量研究的人来说都至关重要。理解负号不仅仅是识别其形状；这涉及到在不同上下文中掌握其含义。随着学生深入研究数学，他们会发现负号不仅是计算的工具，而是解锁数学推理复杂性的关键。因此，掌握负号是成为数学精通者并有效应用其原理于现实世界情境中的一步。