Bessel functions arise in several important applications. There are several types and several families of Bessel functio

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Bessel Functions Arise In Several Important Applications There Are Several Types And Several Families Of Bessel Functio 1 (69.15 KiB) Viewed 26 times

Bessel functions arise in several important applications. There are several types and several families of Bessel functions - all indexed by integers (or half-integers). Bessel functions of the first kind are denoted by Jn (with Jn : 0,00) + R); in Matlab, they are implemented as besselj. They are oscillatory functions with infinitely-many zeros. To see a graph of Jo (2x) try the following in Matlab: fplot(@(x) besselj(0,x),(0,100]) We wish to construct an approximation to the first zero X1 of J. (a) which is located in the interval I = (1, 3). To achieve this, let {';, i = 1,2,3} denote the set of Chebyshev nodes Pi mapped from (-1, 1) to (1,3). Let p(x) denote the simple Hermite interpolant of Jo (2) at {Xi, i = 1, 2, 3). Find the root of p(x) in I and write down this value (rounded to 5d.p.). Recall that the set of n Chebyshev nodes located in (-1,1) is given by (2i – 1) Pi = cos i=1,2,...,n. 2n You may want to use the identity 16 (2) = -J1(x). X1