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.
D[ ((mu i R^2)/2)( (R^2+z^2)^(-3/2) + (R^2 + (z+d)^2)^(-3/2)) , {z,2}]/.{z->-(8 mu i)/(R 10 Sqrt[5]), d-> (8 mu i)/(R 5 Sqrt[5])}
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random