## FunctionEquationNode class

This class specifies the Function-Apply equation, which consists of a function name and an argument acted upon. The types of the name and argument components are 'EquationNodeType.FunctionName' and 'EquationNodeType.Base' respectively.

```csharp
public class FunctionEquationNode : EquationNode
```

## Properties

| Name | Description |
| --- | --- |
| [EquationType](../../aspose.cells.drawing.equations/equationnode/equationtype/) { get; } | Get the equation type of the current node(Inherited from [`EquationNode`](../equationnode/).) |
| [Font](../../aspose.cells/fontsetting/font/) { get; } | Returns the font of this object.(Inherited from [`FontSetting`](../../aspose.cells/fontsetting/).) |
| [Length](../../aspose.cells/fontsetting/length/) { get; } | Gets the length of the characters.(Inherited from [`FontSetting`](../../aspose.cells/fontsetting/).) |
| [ParentNode](../../aspose.cells.drawing.equations/equationnode/parentnode/) { get; set; } | Specifies the parent node of the current node(Inherited from [`EquationNode`](../equationnode/).) |
| [StartIndex](../../aspose.cells/fontsetting/startindex/) { get; } | Gets the start index of the characters.(Inherited from [`FontSetting`](../../aspose.cells/fontsetting/).) |
| [TextOptions](../../aspose.cells/fontsetting/textoptions/) { get; } | Returns the text options.(Inherited from [`FontSetting`](../../aspose.cells/fontsetting/).) |
| override [Type](../../aspose.cells.drawing.equations/equationnode/type/) { get; } | Represents the type of the node.(Inherited from [`EquationNode`](../equationnode/).) |

## Methods

| Name | Description |
| --- | --- |
| [AddChild](../../aspose.cells.drawing.equations/equationnode/addchild/)(EquationNode) | Inserts the specified node at the end of the current node's list of child nodes.(Inherited from [`EquationNode`](../equationnode/).) |
| [AddChild](../../aspose.cells.drawing.equations/equationnode/addchild/)(EquationNodeType) | Insert a node of the specified type at the end of the child node list of the current node.(Inherited from [`EquationNode`](../equationnode/).) |
| override [Equals](../../aspose.cells.drawing.equations/functionequationnode/equals/)(object) | Determine whether the current equation node is equal to the specified node |
| [GetChild](../../aspose.cells.drawing.equations/equationnode/getchild/)(int) | Returns the node at the specified index among the children of the current node.(Inherited from [`EquationNode`](../equationnode/).) |
| [InsertAfter](../../aspose.cells.drawing.equations/equationnode/insertafter/)(EquationNodeType) | Inserts the specified node after the current node.(Inherited from [`EquationNode`](../equationnode/).) |
| [InsertBefore](../../aspose.cells.drawing.equations/equationnode/insertbefore/)(EquationNodeType) | Inserts the specified node before the current node.(Inherited from [`EquationNode`](../equationnode/).) |
| [InsertChild](../../aspose.cells.drawing.equations/equationnode/insertchild/)(int, EquationNodeType) | Inserts a node of the specified type at the specified index position in the current node's child node list.(Inherited from [`EquationNode`](../equationnode/).) |
| [Remove](../../aspose.cells.drawing.equations/equationnode/remove/)() | Removes itself from the parent.(Inherited from [`EquationNode`](../equationnode/).) |
| [RemoveAllChildren](../../aspose.cells.drawing.equations/equationnode/removeallchildren/)() | Removes all the child nodes of the current node.(Inherited from [`EquationNode`](../equationnode/).) |
| [RemoveChild](../../aspose.cells.drawing.equations/equationnode/removechild/)(EquationNode) | Removes the specified node from the current node's children.(Inherited from [`EquationNode`](../equationnode/).) |
| [RemoveChild](../../aspose.cells.drawing.equations/equationnode/removechild/)(int) | Removes the node at the specified index from the current node's children.(Inherited from [`EquationNode`](../equationnode/).) |
| [SetWordArtStyle](../../aspose.cells/fontsetting/setwordartstyle/)(PresetWordArtStyle) | Sets the preset WordArt style.(Inherited from [`FontSetting`](../../aspose.cells/fontsetting/).) |
| [ToLaTeX](../../aspose.cells.drawing.equations/equationnode/tolatex/)() | Convert this equtation to LaTeX expression.(Inherited from [`EquationNode`](../equationnode/).) |
| [ToMathML](../../aspose.cells.drawing.equations/equationnode/tomathml/)() | Convert this equtation to MathML expression.(Inherited from [`EquationNode`](../equationnode/).) |

### Examples

```csharp
using System;
using Aspose.Cells;
using Aspose.Cells.Drawing;
using Aspose.Cells.Drawing.Texts;
using Aspose.Cells.Drawing.Equations;

namespace AsposeCellsExamples
{
    public class EquationsClassFunctionEquationNodeDemo
    {
        public static void Run()
        {
            // Create a new workbook
            Workbook workbook = new Workbook();
            
            // Add an equation to the first worksheet
            Worksheet worksheet = workbook.Worksheets[0];
            TextBox textBox = worksheet.Shapes.AddTextBox(3, 0, 3, 0, 100, 200);

            // Get the equation's root node
            EquationNode mathNode = textBox.GetEquationParagraph().GetChild(0);

            // Create a function node with superscripted name
            FunctionEquationNode functionNode = (FunctionEquationNode)mathNode.AddChild(EquationNodeType.Function);

            // Add function name with superscript
            EquationNode functionName = functionNode.AddChild(EquationNodeType.FunctionName);
            EquationNode supNode = functionName.AddChild(EquationNodeType.Sup);

            // Add base text for function name
            EquationNode baseNode = supNode.AddChild(EquationNodeType.Base);
            TextRunEquationNode baseText = (TextRunEquationNode)baseNode.AddChild(EquationNodeType.Text);
            baseText.Text = "Add";

            // Add superscript text
            EquationNode superscriptNode = supNode.AddChild(EquationNodeType.Superscript);
            TextRunEquationNode superscriptText = (TextRunEquationNode)superscriptNode.AddChild(EquationNodeType.Text);
            superscriptText.Text = "-2";

            // Add function argument
            EquationNode baseArg = functionNode.AddChild(EquationNodeType.Base);
            TextRunEquationNode argText = (TextRunEquationNode)baseArg.AddChild(EquationNodeType.Text);
            argText.Text = "x";

            // Save the workbook
            workbook.Save("FunctionEquationDemo.xlsx");
        }
    }
}
```

### See Also

* class [EquationNode](../equationnode/)
* namespace [Aspose.Cells.Drawing.Equations](../../aspose.cells.drawing.equations/)
* assembly [Aspose.Cells](../../)