Alternatively, you can use the command 'EqnEditor' to add a button to a custom toolbar, e.g.The equation editor buttion (fx) will now appear in the 'insert' group.Modify the config.js to load the plugin by adding config.extraPlugins = 'eqneditor'.Open the CK Editor plugins folder, ~/ckeditor/plugins and copy in the directory 'eqneditor' from the uncompressed 'eqneditor_v2.zip' folder.For our purposes we will assume this is ~/ckeditor. Find the folder where you installed CK Editor.Download the equation editor plugin and uncompress it to your desktop or server.

Use the Command-Tab to step between key elements of your equation.

Double-click or right click on an existing equations to edit them within the Equation Editor.This launches the CodeCogs Equation Editor, which you can also see here Click the fx button on the CK Editor toolbar.To create a new equation, first click within the text area where you need to add the equation.This editor is power by the CodeCogs Equation Engine, the world's leading equation rendering web-service.Usage A high resultion preview of your equation is shown within the editor, which is inserted into your document when you click 'Ok'. This Equation Editor provides a toolbar with common mathematical operators and symbols, to help write stunning equations using the LaTeX markup.

Free math equation editor online