Division matrix
wxjmfauth at gmail.com
wxjmfauth at gmail.com
Wed Nov 14 10:04:09 CET 2012
Le mardi 13 novembre 2012 02:00:28 UTC+1, Cleuson Alves a écrit :
> Hello, I need to solve an exercise follows, first calculate the inverse matrix and then multiply the first matrix.
>
> I await help.
>
> Thank you.
>
> follows the code below incomplete.
>
>
>
> m = [[1,2,3],[4,5,6],[7,8,9]]
>
> x = []
>
> for i in [0,1,2]:
>
> y = []
>
> for linha in m:
>
> y.append(linha[i])
>
> x.append(y)
>
>
>
> print x
>
> [[1, 4, 7], [2, 5, 8], [3, 6, 9]]
>
>
>
> def ProdMatrix(x,b):
>
> tamL = len(x)
>
> tamC = len(x[0])
>
> c = nullMatrix(tamL,tamC)
>
> for i in range(tamL):
>
> for j in range(tamC):
>
> val = 0
>
> for k in range(len(b)):
>
> val = val + x[i][l]*b[k][j]
>
> c[i][j]
>
> return c
------
Pedagogical hint:
Before blindly calculating the inverse matrix, it may be
a good idea to know if the inverse matrix exists.
jmf
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