EXTRACTION OF CHARACTERISTIC ROOTS ON BESSEL-NEUMANN’S MIXED EQUATIONS

This paper discusses the problem of the extraction of characteristic roots{λ_(?)}(λ_0<λ_1<λ_2…)on Bessel-Neumann’s mixed equations.It gives the expressions and the evaluationof the minimum root.The advantage of the method has no use for the table of the multi-figure number Bessel function and it does not need computer but can calculate all thecharacteristic roots{λ_(?)}.The precision of these roots is still high.