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How can I represent the following equation in code?

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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 Comment
Walter Roberson
Walter Roberson on 23 Feb 2021
In this context, H might be the Hankel function, https://www.mathworks.com/help/matlab/ref/besselh.html

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Answers (2)

R SRIRANJANI RAMAKRISHNAN
R SRIRANJANI RAMAKRISHNAN on 23 Feb 2021
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 on 23 Feb 2021
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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