>>> from comp_int import avalua_interval

---- inici

>>> a, m, b = avalua_interval(-4, -2)
>>> round(a, 3)
1.154
>>> round(m, 3)
0.0
>>> round(b, 3)
0.819

>>> a, m, b = avalua_interval(-2.9, 2.9)
>>> round(a, 3)
0.184
>>> round(m, 3)
0.895
>>> round(b, 3)
0.184

---- fi

>>> a, m, b = avalua_interval(-10, -3.1)
>>> round(a, 3)
1.011
>>> round(m, 3)
1.03
>>> round(b, 3)
5.152

>>> a, m, b = avalua_interval(3.1, 10)
>>> round(a, 3)
5.152
>>> round(m, 3)
1.03
>>> round(b, 3)
1.011

>>> a, m, b = avalua_interval(1, 5)
>>> round(a, 3)
0.882
>>> round(m, 3)
0.0
>>> round(b, 3)
1.064