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Jonathan Scott
Apr6-10, 12:08 PM
PF Gold
P: 1,156
I've just given up on trying to post an answer because in preview all of my Latex stuff is showing images from a previous post ages ago and refuses to show the stuff I've entered today. I've cleared the browser cache and restarted it before trying again and that didn't help. What else can I try? For example, the following expression is displaying in preview as v2/r which I used in a post some weeks ago:

\frac{d\mathbf{p}}{dt} = \frac{E}{c^2} \mathbf{g} \left ( 1 + \frac{v^2}{c^2} \right )

Edit: When I submitted this one, the LaTeX now appears as a broken image marker.