Asus G75VX - Manual (Page 55)

Notebook PC User Manual 55
Three-finger swiping - Using three fingers on the touchpad, you can
swipe pages from left to right/right to left. You can also use this gesture
to switch between active windows on your desktop.
Swipe left/right to go back and
forth between active windows or
folder layers. Swipe up to show all applications.
Swipe down to show desktop.