>>> a=range(1,10)
>>> b=range(10,1,-1)
>>> a
[1, 2, 3, 4, 5, 6, 7, 8, 9]
>>> b
[10, 9, 8, 7, 6, 5, 4, 3, 2]
>>> len(a)
9
>>> len(b)
9
>>> c=[] #creo una nueva matriz
>>> for i in range(len(a)):
...     c.append(a[i]*b[i])
...
>>> c
[10, 18, 24, 28, 30, 30, 28, 24, 18]
>>>