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.
log(0.5^25.5 + (1 - 0.5^25.5) * (1/255)^2.2) / log(0.5)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random