>>> from equilibri import troba_equilibri

>>> p = troba_equilibri(0.6, 0.3, 2, 1, 0.01)
>>> round(p,8)
0.46354594

>>> p = troba_equilibri(2.2, 0.1, 1, 50, 0.01)
>>> round(p,8)
1.55077151

>>> p= troba_equilibri(2.2, 0.1, 1, 50, 0.001)
>>> round(p,8)
1.55080102

>>> p = troba_equilibri(2.2, 0.1, 1, 50, 0.0001)
>>> round(p,8)
1.55079899