Not enough input arguments

function dy= test(t,y)  
dy = zeros(2,1); 
dy(1)=t-y(1)./t;
dy(2)=y(1)./t-y(2).*t;  (error in this line)

Error using test(line 3) Not enough input arguments

Can somebody help me to find the problem please? Thanks

[Jan]

Please format your code as explained in the "Markup help" link on this page.

Answer 1

[Matt Tearle]

From your comment to Jan: "then run it"...

If you are running it as a script then it will give this error message because test is a function, requiring t and y to be passed in as arguments. Call it as a function and it should work fine:

>> test(pi,rand(2,1))
ans =
3.1230e+000 
-2.9509e+000

Answer 2

[Jan]

I guess, that you have a function called "t":

which t

Please post the complete error message in the future. It contains helpful information.

[Jiao He]

I was trying to solve the following differential equations:

dy1/dt=t-y1/t

dy2/dt=y1/t-2*t

parameters in the equations are time dependent.

I save this function as test.m, then run it, returns :

Error using test(line 3)

Not enough input arguments.

Answer 3

[Walter Roberson]

What arguments are you passing to test when you invoke it?