Not Enough Input Arguments

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Joel Stewart Miller
Joel Stewart Miller 2021-11-19
评论： Joel Stewart Miller 2021-11-19
I am running a reversible Michaelis-Menten equation and keep getting the "mm requires more input arguments to run" error. Here is my code:
function [ dydt ] = mm( t, y, km1, kp1, km2, kp2)
clc
%MM derivatives for Michaelis Menten kinetics
% MM kinetics: % a + e <==> c
% c <==> e + b
a = y(1);
e = y(2);
c = y(3);
b = y(4);
dydt = [ -(km1 * a * e) + (kp1 * c); %concen a
-(km1 * a * e) + (kp1 * c) + (km2 * c) - (e * b * kp2); %concen e
(km1 * a * e) - (kp1 * c) - (km2 * c) + (kp2 * e * b); %concen c
(km2 * c) - (e * b * kp2); %concen b
];
km1&2 are forward rate constants and kp1&2 are the backwards rate constants
Thank you for the help!

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回答（1 个）

KSSV
KSSV 2021-11-19
It seems you are straigh away running the function using run button or without providing the inputs. You need to define the inputs and then call the function.
% define your input variables
t = value ; % give your value
y = value ;
km1 = value ;
kp1 = value ;
km2 = value ;
kp2 = value ;
% Now call the function
dydt = mm( t, y, km1, kp1, km2, kp2) ;
  1 个评论
Joel Stewart Miller
Joel Stewart Miller 2021-11-19
I am calling this function over to a second script where I define all of the k values. Sorry if I wasn't clear in the original question.
Here is the script where I am trying to call the mm function
kp1=1000;
km1=1;
kp2=0.1;
km2=10;
tspan = [0 1000];
a0 = 0.001;
b0 = 0;
c0 = 0;
E0 = 0.0004;
e0 = 0.0001; %E0-c0=e0
y0 = [a0;b0;c0;e0];
ode15s(@mm, tspan, y0);
This is all of the information I was given (apart from some k equilibrium values for later parts of the question)

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