Here's the question you clicked on:
nOddIE
In the integral \[\int\limits_{V}^{}\rho _{v}dV\] to determine the enclosed charge, can \[\rho _{v}dV\] be changed to \[\rho _{v} \] dot Ads??
is this across an x,y,z region?
this is in spherical coordinate system...
... that one has something like \(\rho~sin^2\) if memory serves
\[\rho^2~sin(\phi)~ddd\]
but would it be possible then to change the differential volume to area multiplied by the differential length? I was working through a test and it's been done here, but it's the first time that I'm seeing this being done...
im not up to snuff on sphericals enough to be certain