[Haskell-cafe] multMM :: Matrix -> Matrix -> Matrix --multiplies
two matrices question (Homework)
조광래
kwangraecho at gmail.com
Wed Feb 3 01:38:17 EST 2010
hi i was trying to solve it but
All i got is
type Matrix=[[Double]]
multMM :: Matrix -> Matrix -> Matrix --multiplies two matrices
multMM m t = [[sum (zipWith (*) (head m)(a)) ] ]where a = [head a | a<-
t]
Main> multMM [[2,1,-6],[1,-3,2]] [[1,0,-3],[0,4,20],[-2,1,1]]
[[14.0]]
from this i could get only the first multiplication 14 that is by 2*1 +
1*0 + -6*-2 = 14
how can i make this go throw all rows and colums to get multiple of matrixs?
Thank you~
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