Bessel functions, used extensively in mathematical physics, electromagnetics, and communication-system theory, must often be approximated by appropriate formulas. The functions Jρ(x) and Iρ(x) for integer values of p are well approximated by the sum of a small number of circular and hyperbolic sines or cosines, respectively, when x is not too large, e.g., less than 10, and convenient expressions are obtained for their errors. These approximations are especially convenient for use on personal computers (PCs) and pocket calculators and in analytically evaluating integrals.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Trigonometric Approximations for Bessel Functions


    Contributors:


    Publication date :

    1986-01-01


    Size :

    1505097 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Bessel Functions

    Ying, Shuh-Jing (Benj | AIAA | 1997


    Acousto-optics without Bessel functions and Bessel functions by acousto-optics (Invited Paper) [2643-04]

    Gabrielli, I. / University of Gdansk / Institute of Experimental Physics| SPIE et al. | British Library Conference Proceedings | 1995