Simple column vector - random number question.

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Danny C
Danny C le 6 Sep 2016
Commenté : Danny C le 6 Sep 2016
Create a column vector of length "num" that consists of random numbers that are uniformly distributed between 2 and 9. (D)
D = randi([2 9],num,1);
D = 2+ 7.*rand(num,1) ;
Why aren't those two true? And what would be the right one?

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James Tursa
James Tursa le 6 Sep 2016
Modifié(e) : James Tursa le 6 Sep 2016
You need to apply the floor() function to rand to get integer results, and your range multiplier isn't quite correct for the range you want. E.g.,
D = 2 + floor(8.*rand(num,1)); % <-- Changed 7 to 8 and added floor() function

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