Criando matriz com valores randômicos no Octave

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>> A = rand(2, 7)
A =
   0.57417   0.29359   0.93906   0.66935   0.73649   0.74332   0.30612
   0.25453   0.20507   0.22274   0.11904   0.19627   0.44360   0.97094