Undefined function 'gensys' for input arguments of type 'double'.

%%Input the equations

%%%%%%%%%
% (1) Euler Equation
%%%%%%%%%

g0(1,nc) = -1;
g0(1,nR) = -1;
g1(1,nc) = -gamma;
pi(1,1) = gamma;      
pi(1,2) = 1;

%%%%%%%%%%%
% (2) Labor equation
%%%%%%%%%%%

g0(2,nc) = gamma
g0(2,nn) = gamman*theta;
g0(2,nw) = -1;

%%%%%%%%%%%%
% (3) Production equation
%%%%%%%%%%%%

g0(3,ny) = 1;
g0(3,nn) = alpha-1;
g0(3,na) = -1
g1(3,nk) = alpha;

%%%%%%%%%%%%
% (4) Law of Motion
%%%%%%%%%%%%

g0(4,nk) = 1;
g0(4,ni) = -(i/k);
g1(4,nk) = 1-delta

%%%%%%%%%%%%
% (5) Techonology
%%%%%%%%%%%%

g0(5,na) = 1;
g1(5,na) = rho;
psi(5,1) = 1

%%%%%%%%%%%%
% (6) Investment 
%%%%%%%%%%%%

g1(6,nc) = c/y;
g1(6,ny) = -1;
g1(6,ni) = (i/y);

%%%%%%%%%%%%
% (7) Rental
%%%%%%%%%%%%

g0(7,ny) = delta-1;
g0(7,nR) = 1;
g1(7,nk) = alpha-1

%%%%%%%%%%%%
% (8) wage
%%%%%%%%%%%%

g0(8,nn) = alpha;
g0(8,nR) = 1;
g1(8,nk) = alpha;

[Jan]

I've formatted your code. Without a proper formatting it is nearly unreadable.

Answer 1

[Jan]

Please post the complete error message. The shown code does not contain the line, which fails. gensys does not belong to Matlab's toolbox functions, so the users of the forum cannot guess, what you are trying to do. It seems like you want to run a function, but did not install it on your computer before.

[Image Analyst]

Ibrahim's "Answer" moved here:

This is the complete error message. I still don't know what the problem is.

Undefined function 'gensys' for input arguments of type 'double'.

Error in Last__homework (line 157)
[G,C0,M,fmat,fwt,ywt,gev,eu]=gensys(g0,g1,cc,psi,pi);

[Image Analyst]

Why do you think you should have that function? Do you believe it ships with one of your toolboxes? If so, which one? Was it one your friend or professor was supposed to give you? I've never heard of it.