Messages can solve simple math equations like "2+2=" by typing them into the text field. The app can also solve equations that use more complex formulas, such as the trigonometric functions of sine, ...
Looking for help with today's New York Times Pips? We'll walk you through today's puzzle and help you match dominoes to tiles ...
"The kid starts cackling, and I realise he invented his own question in order to trick me into saying it," the teacher wrote.
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