Create an array of values of different values of an equation that depends of a list of parameters
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Santiago Alfonso Ospina Botero
el 25 de Abr. de 2022
Respondida: Milan Bansal
el 15 de Sept. de 2023
Hi,
Im currently tryng to solve a problem where I need to calculate q for diferent values of dx . Basically I just want to evaluate de expresion of q for every x. The code for that that I'm using is the following:
function out = heat(dx)
syms x
f = a*x^2 + b*x +c;
out = subs(f, x, dx);
out = double(out);
end
My intention is to create a for loop to fill the values of q in order to use it later in the main code, something like (:
for dx=1:10
q(i) = heat(dx) % q(i) is the the exresion f evaluated at dx
end
The problem that I have is that the parameters a, b and c are in reality defined in the main script so the function depends on those parameters.
I tryed to create a nested function but I still havent managed to find a solution. And honestly I have no idea how to do it.
How do I evaluate this dependend- parameter function and fill the array of values of my vairable q ?
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Milan Bansal
el 15 de Sept. de 2023
Hi,
As per my understanding, you have created a function which is dependent on some parameters that are defined in a main script.
In order to use those parameters in the function, pass them in the function as arguments. Modify your function as shown in the code below.
function out = heat(dx,a,b,c)
syms x
f = a*x^2 + b*x +c;
out = subs(f, x, dx);
out = double(out);
end
To use this function in the "for" loop, modify the code in the main script.
for dx=1:10
q(i) = heat(dx,a,b,c) % q(i) is the the expression f evaluated at dx
end
Refer to the documentation link to know more about MATLAB Functions.
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