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.
{phi(1/(IntegerPart[((2pi x)/(2x))]) (delta^2+lambda^2))} for x=1
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random