-e^-(x-6)²+e^-(x-4)²-e^-(x-2)²+e^-x2-e^-(x+2)²+e^-(x+4)²-e^-(x+6)²-cos(pi*x/2)

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.