First Order solving ODE and simulink

Hello, i want to ask regarding this error. It is from solving first order and simulink. May i know where did error i did and how to solve it. Thankyou.

Answer 1

[Divija Aleti]

Hi Hassan,

Firstly, as you are defining all the variables inside the function, you do not need to pass them as the function's arguments.

Secondly, you are getting an error as you did not define the variable 'C' in your code. Have a look at the following code.

function dCdt = F_O()
t = 300;
Ce = 100;
C = 1; % Define the variable 'C' by giving it some value. As an example I gave C=1.
kLa = 0.0285;
dCdt = (kLa*Ce-C)/t;
end

Hope this helps!

Regards,

Divija

[Hassan Aqwa]

Thank you Divija!

[Hassan Aqwa]

Divija, i want to ask. In this equation, i want to define the C which is i have to find the value of C. so, thats why i didn't define the variables of C. So, how ya?