- #1
Saladsamurai
- 3,009
- 7
Ok, I have either completely lost it (very likely) or Mathematica is being weird (much less likely). The finction D[f,x] is supposed to return the partial of f with respect to x, \partial{f}/\partial{x}.
So I have a function V_\theta = (A/r^2 + B)\sin\theta where A and B are constants. So we should have \partial{V_\theta}/\partial{\theta} = (A/r^2 + B)\cos\theta.
But here is what mathematica is returning. What does that even mean? Why does it just say "sin" and not have the argument? Moreover, why does it not say cos ?!
So I have a function V_\theta = (A/r^2 + B)\sin\theta where A and B are constants. So we should have \partial{V_\theta}/\partial{\theta} = (A/r^2 + B)\cos\theta.
But here is what mathematica is returning. What does that even mean? Why does it just say "sin" and not have the argument? Moreover, why does it not say cos ?!
capital 's' in Sin and square brackets Sin[theta].