The TI-89 is a graphing calculator used in advanced mathematics classes and approved for use on examinations like the Scholastic Aptitude Test and various Advanced Placement tests. While its large ...

You can pull up the Calculator now, but you might not see anything new—at least, I didn’t when I first loaded it. To fix that, go visit Windows Calculator’s listing in the Microsoft Store ...

To do this, begin by writing your equation. For example: y=x+3 or y=sin(x)+cos(2x). Next, use Lasso tool to select the equation and then, on the Draw tab, click the Math button.

Apple improved the Math Notes feature in iOS 26 and iPadOS 26, allowing users to input equations to create graphs in three dimensions. Math Notes was added in iOS 18 and iPadOS 18.