Plotting an equation with summation and roots of bessel function

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Qian Ying Ooi
Qian Ying Ooi 2020-4-19
评论： Devineni Aslesha 2020-4-22
where y=M(t)/M(infinity), alpha(n) are roots of bessel function (first kind, zero order)
D and a are constants, D=5.46e-4, a=3
I'm trying to plot (t,y) for t=0:1:300 but not sure how to code for the roots of bessel function part. Any help is greatly appreciated, thank you!

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Devineni Aslesha
Devineni Aslesha 2020-4-21
The roots of the bessel function (first kind, zero order) can be obtained from the below code.
Z = 0:0.1:20;
J0 = besselj(0,Z);
alpha = roots(J0);
For more information, refer the following links.
https://www.mathworks.com/help/matlab/ref/besselj.html#bvgg_s3
https://www.mathworks.com/help/matlab/ref/roots.html

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