Solución analítica

In[39]:=

DSolve[{x '[t] + x[t] ^(4 t), x[0] 1}, x[t], t]

Out[39]=

{{x[t] 1/5 ^(-t) (4 + ^(5 t))}}

In[40]:=

ansol[t_] = x[t]/.%[[1]]

Out[40]=

1/5 ^(-t) (4 + ^(5 t))

Created by Mathematica  (August 6, 2004)