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.
y / ( y+ (x/4)^0.8 ); x=5000; y=200
y / ( y+ (x/4)^0.8 ); x=5000; y=200
Natural Language
Math Input
Extended Keyboard