>>> from comportament import f

---- inici

>>> y = f(0)
>>> round(y, 3)
-0.402

>>> y = f(1.5)
>>> round(y, 3)
-1.64

>>> y = f(1.999)
>>> round(y, 3)
-714.049

>>> y = f(2)
>>> round(y, 3)
0.0

>>> y = f(2.001)
>>> round(y, 3)
713.555

>>> y = f(10)
>>> round(y, 3)
0.023

---- fi

>>> y = f(-1.999)
>>> round(y, 3)
-47.32

>>> y = f(-2)
>>> round(y, 3)
0.0

>>> y = f(-2.001)
>>> round(y, 3)
47.338

>>> y = f(100)
>>> round(y, 5)
0.00041