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I am working with an Interpolating Function of an oscillating solution (time series) to a differential equation. I am trying to find the period and pulse width of the oscillation. To do this I would like to have an inverse of my function y[t] (so I would have t[y]). I realize this function would be multivalued (that's in part what I want to find the period). I am not having success using Mathematica's InverseFunction[] or Reduce[] commands. Does anyone have any experience or suggestions with this sort of thing (either finding Inverse Interpolating Functions or another method for period and pulse width)? Thank you.

-GR

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# Inverse of Interpolating Function?

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