programming recursion

[BVBA NuKey Music]

I'm trying to program the following in octave (preferably matlab-compatible) using recursion:
Q(n)=T(n)/N(n)
with T(1)=N(1)=1
and
T(n)=T(n-1) + 2*N(n)
N(n)=T(n)+N(n)

I made up the following but this is not accepted by octave, can someone help me solve this like it should?

best regards,
nukeymusic

function answer = Q( n )


    if( n == 0 )
        answer = 1;
        return;
    else
        answer = T(n) / N(n);
    endif

endfunction


function answer = T( n )

    if( n == 1 )
        answer = 1;
        return;
    else
        answer = T(n-1) + 2*N(n);
    endif

endfunction

function answer = N( n )

    if( n == 1 )

        answer = 1;
        return;
    else
        answer = T(n)+N(n);
    endif

endfunction


On 9/6/07, Hugo Coolens <