Not Enough Input Arguments

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!

Answer 1

[KSSV]

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) ;

[Joel Stewart Miller]

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)