One solution to the Bessel equation of (nonnegative) integer order N
(a) Write the first three terms of J0(x).
(b) Let J(0, x,m) denote the mth partial sum
Plot J(0, x, 4) and use your plot to approximate the first positive zero of J0(x). Compare your value against a tabulated value or one generated by a computer algebra system.
(c) Plot J0(x) and J(0, x, 4) on the same axes over the interval [0, 2]. How well do they compare?
(d) If your system has built-in Bessel functions, plot J0(x) and J(0, x,m) on the same axes over the interval [0, 10] for various values of m. What is the smallest value of m that gives an accurate approximation to the first three positive zeros of J0(x)?
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