thanks everyone!
few questions though,
1) where can I find a guide on posting LaTeX code on the forums?
2) does the 1/(r^2) * (r^2 * v_r): does the r^2 come from metric coefficients?
Homework Statement
Show that the vector
v = \frac{\hat{r}}{r2} (not sure why formatting isn't working?)
v = (r-hat) over (r squared)
has zero divergence (it is solenoidal) and zero curl (it is irrotational) for r not equal to 0
Homework Equations
div(V) = (d/dx)V_x + (d/dy)V_y +...