Install office on your mobile phone, and then install a formula editor. By default, this option is usually not installed. If it is installed, it can be used. You can use the object in the Insert menu and select microsoft 3.0. Many symbols are used in mathematics, including calculus in advanced mathematics. Select the corresponding symbol, and then enter the number you need in the appropriate position of the symbol.

If you want to make it more convenient, you can also choose Customize under the Tools menu after installing the formula editor, then select the Command tab, select Insert on the left side of the dialog box, and select the formula editor with the icon with the root sign A on the right side. You can drag it anywhere on the word toolbar like a common tool, and you can use it casually in the future, which is very convenient.

Extended data:

Computer-side formula editor:

MathType is a professional tool for editing mathematical formulas, especially suitable for science students. Mathtype Formula Editor can help users to insert complex mathematical formulas and symbols in various documents.

Mathtype tool can easily input all kinds of complicated formulas and symbols, which is perfectly combined with Office documents, and the display effect is super good, which is much more powerful than the formula editor that comes with Office.