cos(x)+cos(2x)+cos(3x)+cos(4x)+cos(5x)+cos(6x)+cos(7x)+cos(8x)+cos(9x)+cos(10x)+.5,sinc(10.5x)*11.5

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.