$$\text { A function } y ( t ) \text { satisfies the differential equation } \frac { d y } { d t } = y ^ { 4 } - 9 y ^ { 3 } + 20 y ^ { 2 } \text {. }$$

Short Answer

$$\text { A function } y ( t ) \text { satisfies the differential equation } \frac { d y } { d t } = y ^ { 4 } - 9 y ^ { 3 } + 20 y ^ { 2 } \text {. }$$ $$\text { What are the constant solutions of the equation? }$$