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?

  • 1
    $\begingroup$ 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? $\endgroup$ Mar 31, 2022 at 12:37

1 Answer 1


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


Not the answer you're looking for? Browse other questions tagged or ask your own question.