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Ingy döt Net 2013-06-05 21:47:54 +00:00
parent 1f1ad49427
commit 6f050a029e
2496 changed files with 37609 additions and 3031 deletions
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7
Task/Matrix-multiplication/Mathematica/matrix-multiplication-4.math Normal file
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@ -0,0 +1,7 @@
matrixMul[m1_, m2_] := Table[Times @@ {a, b} // Tr, {a, m1}, {b, Transpose@m2}]
matrixMul2[m1_, m2_] :=Table[Sum[Times @@ i, {i, Transpose@{a, b}}], {a, m1}, {b, Transpose@m2}]
a = {{1, 2}, {3, 4}, {5, 6}, {7, 8}};
b = {{1, 2, 3}, {4, 5, 6}};
matrixMul[a, b]
matrixMul2[a, b]

3
Task/Matrix-multiplication/Racket/matrix-multiplication-1.rkt
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@ -1,4 +1,7 @@
#lang racket
(define (m-mult m1 m2)
(for/list ([r m1])
(for/list ([c (apply map list m2)])
(apply + (map * r c)))))
(m-mult '((1 2) (3 4)) '((5 6) (7 8)))
;; -> '((19 22) (43 50))

6
Task/Matrix-multiplication/Racket/matrix-multiplication-2.rkt
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@ -1,6 +1,4 @@
#lang racket
(require math)
(matrix* (matrix [[1 2]
[3 4]])
(matrix [[5 6]
[7 8]]))
(matrix* (matrix [[1 2] [3 4]]) (matrix [[5 6] [7 8]]))
;; -> (array #[#[19 22] #[43 50]])