How to use Greek Letters in equation

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Aloe
Aloe 2022-7-26
回答： Stephen23 2022-7-26
Ran in:
Hello
I am still new to MatLAB but below is my attempt on using greek letters in my equation. It comes up with an error saying "Invalid use of operator" and some other errors in connector which is confusing for me. Been trying to fix it but no hope.
Any help will be appreciated.
k1 = \omega .* sqrt((\mu .* \epsilon)/(2)) .* sqrt((1 + ((\sigma)/(\epsilon .* \omega))^2) + 1);
Invalid use of operator.

Error in connector.internal.fevalMatlab

Error in connector.internal.fevalJSON
k2 = \omega .* sqrt((\mu .* \epsilon)/(2)) .* sqrt((1 + ((\sigma)/(\epsilon .* \omega))^2) - 1);
k = k1 + i.*k2;
disp(k)
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KSSV
KSSV 2022-7-26
Why you want special symbols in equation? They are variables.
Aloe
Aloe 2022-7-26
@KSSV My equation has them as constants so I thought I could use them as constants like that

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采纳的回答

Aloe
Aloe 2022-7-26
编辑：Aloe 2022-7-26
Ran in:
I improved it and hope this makes it more right to be considered a code in MatLAB
omega = evalin(symengine, '`ω`');
mu = evalin(symengine, '`µ`');
epsilon = evalin(symengine, '`ϵ`');
sigma = evalin(symengine, '`σ`');
k1 = omega * sqrt((mu .* epsilon)/(2)) * sqrt((1 + ((sigma)/(epsilon * omega))^2)+1);
k2 = omega * sqrt((mu * epsilon)/(2)) * sqrt((1 + ((sigma)/(epsilon * omega))^2)-1);
k = k1 + 1i*k2;
disp(k)

更多回答（1 个）

Stephen23
Stephen23 2022-7-26
Ran in:
The MATLAB approach:
syms omega mu epsilon sigma
k1 = omega .* sqrt((mu .* epsilon)/(2)) .* sqrt((1 + ((sigma)/(epsilon .* omega))^2) + 1);
k2 = omega .* sqrt((mu .* epsilon)/(2)) .* sqrt((1 + ((sigma)/(epsilon .* omega))^2) - 1);
k = k1 + i.*k2
k = 

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