# How to use Greek Letters in equation

조회 수: 4(최근 30일)
Aloe 2022년 7월 26일
답변: Stephen23 2022년 7월 26일
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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Aloe 2022년 7월 26일
@KSSV My equation has them as constants so I thought I could use them as constants like that

댓글을 달려면 로그인하십시오.

### 채택된 답변

Stephen23 2022년 7월 26일
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 = 댓글을 달려면 로그인하십시오.

### 추가 답변(1개)

Aloe 2022년 7월 26일
편집: Aloe 2022년 7월 26일
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) 댓글을 달려면 로그인하십시오.

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