ode45 error **help please**

My code, which I am 95% sure is correct, is the following:

function yprime = ex3_2ndorder(x,y)
    %name and date
    yprime=zeros(2,1);
    yprime(1)=y(2);
    yprime(2)=exp(x)-4*y(2)-3*y(1);
end

When I run it, it tells me there are not enough input arguments and that the error is in line 4, yprime(1)=y(2);

The ODE I am trying to solve is z"+4z'+3z=e^x, z(0)=1, z'(0)=2

Any help would be greatly appreciated :)

Answer 1

[Walter Roberson]

 ode45(@ex3_2ndorder, stuff

You probably left out the @