You can use Math Notes in the Apple Notes or calculator apps. I prefer using it in the calculator app as it is more straightforward and offers clutter-free experience.

In iPadOS 18, there’s a new Calculator app but also a new way to do math in Notes — called Math Notes — and around the operating system. We put it to the test.

Math 115 - Pre-Calculus is an in-depth study of functions. Several function classes are studied, including linear, quadratic, polynomial, rational, exponential, logarithmic, and trigonometric ...

In iOS 18, Apple has added a powerful new feature to your iPhone's Calculator app: Math Notes. This integration between Calculator and Notes offers a versatile tool for all your calculation needs.