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So I have a function

\[Phi] = 4*ArcTan[(v*t)/Sinh[vt/Sqrt[1 - v^2]]];

And am trying to plot using

Plot[\[Phi], {x, -Pi, Pi}]

But so far seem to be having no look as it creates a pair of empty axes. What is going on here?

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    $\begingroup$ Your function depends on t,v, vt and you try to plot over x. Perhaps there is a typo inside definition and vtshoud be v*t? $\endgroup$
    – Ulrich Neumann
    Mar 31, 2022 at 12:37

1 Answer 1

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Assuming a typo ( vtequals v*t) and assuming missing parameter value for v:

With [{v = .1},Plot[4*ArcTan[(v*t)/Sinh[v t/Sqrt[1 - v^2]]], {t, 0, 10}]]

enter image description here

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