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.
D((1/4) Log((x^2 - 1)/(x^2 + 1)), x)
D((1/4) Log((x^2 - 1)/(x^2 + 1)), x)
Natural Language
Math Input
Extended Keyboard
