excel表格制作函数
    ## How to Use Functions in Excel.
    Functions are built-in formulas that perform calculations or other operations on data in a spreadsheet. They can be used to simplify data analysis, perform complex calculations, and automate tasks.
    To use a function, you first need to select the cell where you want the result to appear. Then, you can type the function name followed by the arguments (the data that the function will use to perform the calculation). The arguments are enclosed in parentheses and separated by commas.
    For example, the SUM function adds up a range of cells. To use the SUM function, you would type the following into the cell where you want the result to appear:
    =SUM(A1:A10)。
    In this example, the SUM function will add up the values in cells A1 through A10.
    There are many different functions available in Excel, each with its own specific purpose. You can find a list of all the functions in the Excel Help menu.
    ## How to Create a Custom Function.
    In addition to the built-in functions, you can also create your own custom functions. Custom functions are VBA (Visual Basic for Applications) subroutines that you can define and use in your spreadsheets.
    To create a custom function, you need to open the Visual Basic Editor (VBE). You can do this by pressing Alt+F11 on your keyboard.
    Once the VBE is open, you need to insert a new module. You can do this by clicking on the "Insert" menu and selecting "Module".
    A new module window will appear. You can then type your custom function into the module window.
    For example, the following code defines a custom function called "MySum" that adds up a range of cells:
    Function MySum(rng As Range)。
        Dim i As Integer.
        Dim sum As Double.
        For i = 1 To rng.Count.
            sum = sum + rng(i)。
        Next i.
        MySum = sum.表格制作excel教程函数
    End Function.
    Once you have defined your custom function, you can use it in your spreadsheets just lik
e any other built-in function.
    ## 中文回答：
    如何使用 Excel 函数。
    函数是内置公式，可对电子表格中的数据执行计算或其他操作。它们可用于简化数据分析、执行复杂计算和自动执行任务。
    要使用函数，首先需要选择要显示结果的单元格。然后，您可以输入函数名称，后跟参数（函数将用于执行计算的数据）。参数用圆括号括起来并用逗号分隔。
    例如，SUM 函数对单元格区域求和。要使用 SUM 函数，需要在要显示结果的单元格中输入以下内容：
    =SUM(A1:A10)。
    在此示例中，SUM 函数将对 A1 至 A10 单元格中的值求和。
    Excel 中提供了许多不同的函数，每个函数都有其特定的用途。您可以在 Excel 帮助菜单中到所有函数的列表。
    如何创建自定义函数。
    除了内置函数之外，您还可创建自己的自定义函数。自定义函数是 VBA（Visual Basic for Applications）子例程，您可以在电子表格中定义和使用它们。
    要创建自定义函数，您需要打开 Visual Basic 编辑器 (VBE)。您可以通过按键盘上的 Alt+F11 来执行此操作。

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