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| To determine the FWHM of LSFs I tried to solve the following non-linear equations with Mathematica: Assuming[a > 0 && Element[{a, x}, Reals], Sol = Solve[Abs[x] *BesselK[1, Abs[x]/a] == a/2, x]] Assuming[a > 0 && 0 |
| Thank you, but I know this inbuilt function BesselK. My hope was that Methematica will give me This answer by solving the integral above. Mathematica writes only the integral as result. |