integrate the expression for "I"

Hello,

So this is my formula, and I need to find the bottom integral(to integrate the expression for "I", and then I need a graph of the relation between I and R and d, which should be three dimensions).

Can someone help me? Thanks!

[Walter Roberson]

I suggest that you use the symbolic toolbox syms() and int(), sin(), cos(), tan(), asin(), acos(), atan()

[yuh zhang]

Thanks, great suggestion !