Harrod's growth model is given as under
\(\begin {matrix} S_t=aY_t\\\ I_t=b[Y_t-Y_{t-1}]\\\ S_t\equiv I_t \end{matrix} \begin {matrix} 0
In this model. growth condition is
1
\(\frac{b}{(b-a)}>0\)
2
\(\frac{b}{(b-a)}<0\)
3
\(\frac{a}{(b-a)}>0\)
4
\(\frac{a}{(b-a)}<0\)