Texpaste

LaTeX revolutionized the way mathematical functions are handled on a computer, and ever since then, it is the industry standard for publishing such material. Root formulae, fractions, and operators cannot be properly created and managed without TeX code, so if you often dabble with such functions, you're probably familiar.

As it uses TeX code, Texpaste makes the process of typing/working with mathematical functions more convenient, as it provides a quick and easy way for users to paste their formulas into a word processor of their choice.

The interface may seem rather simplistic to some users — maybe overly so, considering that what essentially greets you is a text field accompanied by a preview, and that's all. In the context of such an app, that is far from a bad thing: as its task is to allow one to quickly copy and paste complex mathematical functions to other word processors, simplicity does help.

Some knowledge of TeX code is required to make full use of this program: even if you're not very familiar, the internet provides plenty of guidance on how to utilize the LaTeX system. Inserting the appropriate code into the text box will have the preview panel display it. In order to copy the text, you'll need to either press the Enter key, or press the little green icon in the top-right corner.

Custom macros can be configured in the Settings menu: all that's needed is to specify a name, as well as a definition. This makes it easier to manage functions you use often.

As for the pasting onto a word processor, the tool seems to take a screenshot of the function, hence you can personalize the output background and foreground colors. While it is most likely a bug, it's worth mentioning that the program would always crash-to-desktop upon copying something from it.

Though Texpaste keeps it simple, the versatility of LaTeX code makes it sufficiently capable to handle your mathematics.