(Image credit: Apple) From the demo, it seems that you can just open Math Notes on your iPad and start writing with your Apple Pencil. You can write or draw anything you like and it will recognize it.

While the Calculator app can be used with buttons just like the iPhone version, Apple's including Math Notes within it in order to take advantage of an Apple Pencil when writing out and solving ...

The new Math Notes feature helps you evaluate expressions, assign variables, and plot graphs with an Apple Pencil or a keyboard. The Calculator app solves expressions inline as soon as you write ...