# how can I write a function of another function of two variables

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Maryam Albuhayr on 22 May 2024
Commented: Maryam Albuhayr on 22 May 2024
How can I wtite
where are constant.
in such a way I can evaluate vectors in it, For example ,where
Lt=linespace(0,1,10) and Lt=linespace(0,10,10)

Star Strider on 22 May 2024
Create the ρ function and then call it in the μ function —
rho = @(t,z) something;
mu = @(t,z) c .* log(rho(t,z)*b ./ (1 - rho(t,z)*b)) + rho(t,z)*b./(1-rho(t,z)*b);
Example —
b = rand
b = 0.4246
c = rand
c = 0.0166
rho = @(t,z) t./z;
mu = @(t,z) c .* log(rho(t,z)*b ./ (1 - rho(t,z)*b)) + rho(t,z)*b./(1-rho(t,z)*b);
Li = linspace(0, 1, 10);
Lz = linspace(0, 10, 10);
Mu = mu(Li, Lz)
Mu = 1x10
NaN -0.0072 -0.0072 -0.0072 -0.0072 -0.0072 -0.0072 -0.0072 -0.0072 -0.0072
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Torsten on 22 May 2024
It's very unusual to give dt/dz^2 the name Lambda. Lambda is thermal conductivity in general.
So your code works now ? At least it should no longer give syntax errors.
Maryam Albuhayr on 22 May 2024
Unfortunately, not yet