The American Heart Association’s PREVENT equations predict risk in subgroups of Asian and Hispanic people, a new study shows.

This one has a hilarious name, but luckily it works pretty well. The app lets you draw various graphics using various types of equations. It claims to work as well as a TI-83 or TI-84 calculator ...

Messages can solve simple equations -- like "2+2=" -- by typing them into the text field. The app can also solve equations that use more complex formulas, like the trigonometric functions of sine ...

He had been working on a graphing calculator to show off the capabilities of the new system. Finding his badge still allowed him access to the building, he “just kept showing up.” ...