How can I represent the following equation in code?

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Daniel Naranjo
Daniel Naranjo 2021-2-22
回答： Walter Roberson 2021-2-23
How can I represent the following equation in code?
I tried this
abs((e.^(j*w)).*H)
but the parenthesis disappear.
I need to write in code to be able to change the value of the variables. thanks for your help
  1 个评论
Walter Roberson
Walter Roberson 2021-2-23
In this context, H might be the Hankel function, https://www.mathworks.com/help/matlab/ref/besselh.html

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回答（2 个）

R SRIRANJANI RAMAKRISHNAN
h(e^jw) is a. function. After substituting the values, it is assigned to a variable. That variable can be compared with this value.
Walter Roberson
Walter Roberson 2021-2-23
Ran in:
w = linspace(-5,5);
hejw = abs(besselh(1, exp(1j*w)));
mask = 0.7943 <= hejw & hejw <= 0.8913;
plot(w, hejw, 'k-');
hold on
scatter(w(mask), hejw(mask), 'b*');
hold off

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