en concreto esto es lo que me sale cuando escribo la funcion :
function y=castel(p,n,t)
c=zeros(n+1,n+1,2);
for i=1:n
c(1,i,:)=(1-t)*p(i,:)+t*p(i+1,:);
end
for r=2:n
for i=1:n+1-r
c(r,i,:)=(1-t)*c(r-1,i,:)+t*c(r-1,i+1,:)
end
end
y(1)=c(n,1,1);
y(2)=c(n,1,2);

function y=castel(p,n,t)
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Error: Function definitions are not permitted at the prompt or in scripts.