>>102837970>It's wrong, the derivative is rrdr, not rdrr. And nobody would write or read it rrdr, it would be read r square d r. And I don't know a single person who'd laugh at that.Came in here to say this. First thing you think of when you see the derivative of r^3/3 is r^2 dr, and absolutely nobody would jump from that to "rdrr" for the sake of a pun.
