| Author |
Comment/Response |
BKP
|
 09/19/12 5:32pm
I am solving some circular waveguide equations and I need to use the zeros of of the derivative of the Bessel function of the first kind for various integer orders.
I could manually implement the table but I would prefer Mathematica to do it for me.
I saw that there was a function in versions of Mathematica prior to 6 that gives me exactly what I need. Unfortunately it is no longer available in the new versions.
(http://mathworld.wolfram.com/BesselFunctionZeros.html)
I have seen the BesselJZero function, but it it is not for the first derivative of the function.
(http://reference.wolfram.com/mathematica/ref/BesselJZero.html)
My initial attempts at recreating that function were useless since I can't seem to figure out to calculate a certain amount of roots of the derivative. I used the following line of code:
FindRoot[D[BesselJ[0, x], x], {x, 5}]
Does anyone have any idea how I could use that old function or create my own?
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