MATLAB code for stiff differential equation with explicit Euler method

I wrote a following program for of 2 differential equations for stiff differential equation with explicit Euler method. But getting the following error. Any idea? because I don't have, I am new at MATLAB.

Answer 1

[Torsten]

y(n+1) = y(n)+h*f([x(n) y(n)]);
x(n+1) = x(n)+h*g([x(n) y(n)]);

if your ODE system reads

y' = 98x+198y
x' = -99x-199y

Best wishes

Torsten.

[Shumaila Khan]

Actually, I am working on autonomous case

[Torsten]

... and give x and y an initial value x(1) and y(1) before you enter the for-loop:

f=@(y)...;
g=@(x)...;
h=10;
x(1)=2;
y(1)=3;
for n=1:10
  v=[x(n) y(n)];
  y(n+1)=y(n)+h*f(v);
  x(n+1)=x(n)+h*g(v);
end

Best wishes

Torsten.