Simpson method, ezplot (with strings)

Hello,

I need to calculate the mass of a substance entering a reactor using Simpson's method and graphically display the dependence of mass on time. The mass is expressed via an integral you can see at the end. M - mass [kg], Q - flow [m^3/L], c - concentration [mg/L]. The measurements are shown in a table: t/min=[0 10 20 30 40 45 50 55], Q/m^3 min^-1=[3.6 3.9 4.5 4.8 5.0 4.9 4.9 4.3], c/mg m^-3=[15 20 40 55 56 48 42 30]. Also function has to be defined in function file, can't be inline.

I can't get anything from my code, even when I just put two string in ezplot, I get an error, so I need any help I can get.

Thank you!!

[William Rose]

@Borna, you referred to your code, but I don't see any. Please attach it. Thanks.

[John D'Errico]

@Borna

The mistake you made is in your code. We don't see any code. If you want help, then make it possible to get help, and show your code.

[Walter Roberson]

ezplot does not accept two strings in any of its forms. It accepts one string at most. ezplot and ezplot (symbolic) do not even accept any Name/Value pairs.

Answer 1

[Walter Roberson]

Calculate dt first. Then calculate Q.*c.*dt. Now use https://www.mathworks.com/matlabcentral/fileexchange/25754-simpson-s-rule-for-numerical-integration