Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
derivate (c_2 sin(2 x)+c_1 cos(2 x)-1/4 x cos(2 x)+1/4)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random