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Create math equations on a OneNote page using Equation Tools in OneNote for Windows 10. Choose from a library of mathematical symbols and structures to build different types of equations.
- Sign into Office.com.
- Open OneNote and open or create the notebook you would like to add equations to.
- Select Insert >Equation.
- Select the Symbols tab or the Structures tab, then a category. From there, select symbols or structures to insert into your math equation.
For example: To insert a basic math symbol, select Symbols, then select the Basic Math +- category. From there, select a symbol to insert.
OneNote automatically saves recently selected symbols and structures. From the Recent tab, you can view and select symbols and structures you've recently used.
Please find the details here
https://support.microsoft.com/en-us/topic/create-equations-in-onenote-using-equation-tools-2c19d141-a97c-478a-98c3-ce388f7b6032
For MAC - https://support.microsoft.com/en-us/office/insert-a-mathematical-equation-in-onenote-for-mac-08969f84-ed02-4baf-8a77-7ab3c1e26afe
Hope this information would be useful to you. Please feel free to get back if you need any additional info.
Thank you!
Ravikumar
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