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.
plot re (log(zeta(0.5+ d+9i)/zeta (0.5- d+9i))) -(-d log(9/2/pi) )from -1 to 1
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random