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A pdf document was uploaded to SharePoint on February 9th. The “Modified” column shows the Modified date as January 8th. If the file did not exist on SharePoint on January 8th, why would that be the Modified date?Read more

I want to find positive solution to an equation $ \text{Solve}\left[t==\frac{\sqrt{\left(\frac{L}{\gamma }+t v\right)^2+x^2}}{c}\land \text{assume},t\right]$ . Although using many assumptions, Mathematica provides a negative solution as explained in what follows. A similar but simpler equation works as expected. How can I obtain the positive solution to the equation First a little context: I’m using Solve toRead more