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There are many ways to calculate basic math problems and solve algebraic equations, geometric expressions, and trigonometric functions on your iPhone, but Apple just came out with one that will blow you away. With the upcoming iOS 18 software update, released on Sept. 16, you can type or write simple math problems, equations, expressions, and functions in a note, and the Notes app will solve them for you inline in real time. This is all thanks to a new feature called Math Notes, which is hosted in the Notes app but also accessible from the Calculator app. Before iOS 18, you could manually calculate math problems using Calculator's built-in scientific calculator, but Math Notes makes it an easier, more natural process. If you have an iPad, you used to have to use Spotlight Search, Siri, or third-party calculators to do any math, but iPadOS 18, also released on Sept. 16, now has Apple's official Calculator app, and Math Notes is even better when you use an Apple Pencil. Math Notes also...more