Calculus Tools 0.8, 0.8.1, 0.8.2

0.8

Math keyboard bundled in the program. You can activate this under settings >> language and keyboard >> calculus tools. To activate it, long press on a text box and choose input method. It will stay active on your phone until you go back to your regular keyboard. I know this is not as easy as keyboards included in some other math applications, but I really didn't want to devote that much screen space to a keyboard all the time.

Thanks to David and John for the suggestion.

0.8.1

Bug fix for keyboard.

0.8.2

Derivative function can do partial derivatives and higher orders.

Thanks to Andrew for the suggestion