With math in the Notes app, you can draw diagrams, solve equations, assign variables, and plot graphs. Mathematical expressions are solved inline when you write or type an equal sign.
Note: The Notes app supports math written using Western Arabic numerals and common mathematical symbols, or typed using Arabic (Eastern & Western) and Devanagari numerals and common mathematical symbols.
Tap Work with graphs in Math Notes in Calculator on iPad.
Go to the Notes app Add photos, video, and more to notes on iPad