Not enough input argument in ode45

function dxdt = mastersystem(t,x);

b = -.68;

a= -1.27;

c= abs(x(1)+1);

d= abs(x(1)-1);

e= abs(x(4)+1);

g= abs(x(4)-1);

f1= b*x(1)+.5*(a-b)*(c-d);

f4= b*x(4)+.5*(a-b)*(e-g);

w(t)= 0.1*sin(2*t);

dxdt(1,1)= -10*x(1)+ 10*x(2)-10*f1+w(t);

dxdt(2,1)= x(1)-1.02*x(2)+x(3)+.02*x(5);

dxdt(3,1)=-14.87*x(2);

dxdt(4,1)=-10*x(4)+10*x(5)-10*f4+w(t);

dxdt(5,1)= x(4)-x(5)+x(6);

dxdt(6,1)= -14.87*x(5);

y(1)=x(1);

y(2)=x(3);

y(3)=x(4);

y(4)=x(5);

y(1)=x(1);

y(2)=x(3);

y(3)=x(4);

y(4)=x(5);

[t,x] = ode45(mastersystem,[0 10],[0 0 0 0 0 0]);

Not enough input arguments.

Error in mastersystem (line 4)

c= abs(x(1)+1);

Answer 1

[VBBV]

[t,x] = ode45(@mastersystem,[0 10],[0 0 0 0 0 0]);  % use a function handle to pass function as argument 
plot(t,x)

function dxdt = mastersystem(t,x);
b = -.68;
a= -1.27;
c= abs(x(1)+1);
d= abs(x(1)-1);
e= abs(x(4)+1);
g= abs(x(4)-1);
f1= b*x(1)+.5*(a-b)*(c-d);
f4= b*x(4)+.5*(a-b)*(e-g);
w = 0.1*sin(2*t);  % change this vector assignment 
dxdt(1,1)= -10*x(1)+ 10*x(2)-10*f1+w;
dxdt(2,1)= x(1)-1.02*x(2)+x(3)+.02*x(5);
dxdt(3,1)=-14.87*x(2);
dxdt(4,1)=-10*x(4)+10*x(5)-10*f4+w;
dxdt(5,1)= x(4)-x(5)+x(6);
dxdt(6,1)= -14.87*x(5);
y(1)=x(1);
y(2)=x(3);
y(3)=x(4);
y(4)=x(5);
y(1)=x(1);
y(2)=x(3);
y(3)=x(4);
y(4)=x(5);
end

[VBBV]

use a function handle to pass function as argument