How to use Greek Letters in equation

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)

[KSSV]

Where you want to use Greek letters?

[Dyuman Joshi]

Why are you using forawrd slash operator (\) before 'your' variable names?

[Aloe]

@Dyuman Joshi thought it was compulsory when using greek letters in an equation

[Aloe]

@KSSV in my k1 and k2 equations

[KSSV]

Why you want special symbols in equation? They are variables.

[Aloe]

@KSSV My equation has them as constants so I thought I could use them as constants like that

Answer 1

[Aloe]

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)

Answer 2

[Stephen23]

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 =