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 {1/(1+erf(sqrt pi/2 y))-1/(1+y)(1+ pi/12 y^3/(1+y)(1+pi/120 (y^3-9y^2)/(1+y)))},{y,0,1.0}
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random