WeBWorK+

WeBWorK+ is a third party chrome extension aiming to provide intuitive input for math equations. Though primarily made for WeBWorK, it can function on other websites provided that the CSS does not clash.

WeBWorK+ is enabled automatically on WeBWorK. To enable it on another site, click the browser action button in the toolbar. Other sites can also be whitelisted via the settings page to enable WeBWorK+ by default.

To open the input UI, focus an input and click the WW+ button. UI options include a modal overlay, as well as an input bar fixed to the bottom of the screen.

Equations are rendered using the MathQuill library which can be found here: http://mathquill.com/

WeBWorK+ currently supports numeric and trigonometric WeBWorK functions.
Notable exceptions include:

**, use ^ instead.
[] and {}, use ().
Scientific notation, eg. 2E9 is not supported. 2*10^9 can be used instead.
exp(x), use e^x
logten(x), bases can be typed manually.
trig^-1(x), for inverse trig, use the prefix 'a' or 'arc' instead of ^-1.