plot an specific function in matlab

2022 10 13
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更新时间：2022 10 13
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I have this equation to be plotted, I wanted to know if there is any specific function for this equation or not, somethins like beseel function, I say bessel function because at first I thought this equation is bessel function but after searching bessel function I realized I was wrong.
plot the below equation for -1<sinx<1:
dn=1/32 sin(38.4pi*sinx)/sin(1.2pi*sinx)

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2NOR_Kh
2NOR_Kh 2022-10-13
编辑：2NOR_Kh 2022-10-13

0 个投票

I could find the answer to this question after some search and I'll answer it for anyone who came up with the same question in the future.
This function which is a sine term over another sine term is ac ting like a periodic sinc function and is called dirichlet function and you can use y = diric(x,n) to use this function in matlab.

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David Hill
David Hill 2022-10-13

1 个投票

dn=@(x)1/32*sin(38.4*pi*sin(x))./sin(1.2*pi*sin(x));
x=-pi/2:.01:pi/2;
plot(x,dn(x))

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2NOR_Kh
2NOR_Kh 2022-10-13
Hi David,
Thank you so much for your answer; I appreciate it, but I asked if there is a specific function to plot this or not because it asked to plot it with a specific function, the closest built-in function that I could find was the Bessel function, but Bessel is not a sine term over another sine term which we can see in this question. I searched through Internet, but unfortunately, I couldn’t find anything.
David Hill
David Hill 2022-10-13
You are plotting it with a specific function, plot. dn is a specific function defined by you.

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