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Student Support Forum > General > > "Roots of the Derivative of the Bessel Function"

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Original Message (ID '38352') By Bill Simpson:
This http://reference.wolfram.com/mathematica/Compatibility/tutorial/NumericalMath/BesselZeros.html leads to http://library.wolfram.com/infocenter/MathSource/6777/ which appears to be old, but it looks like it includes code to calculate BesselJPrimeZeros. You might be able to use that as is or extract the small part of it that calculates just what you need.