均匀分布的随机数到底包含端点不？！
matlab，版本R14中关于rand函数，有下面两句。第一句：
The rand function generates arrays of random numbers whose elements are uniformly distributed in the interval (0,1).
第二句：
Generate a uniform distribution of random numbers on a specified interval . To do this, multiply the output of rand by (b-a) then add a. For example, to generate a 5-by-5 array of uniformly distributed random numbers on the interval a = 10; b = 50;
x = a + (b-a) * rand(5)
x =
18.1106 10.6110 26.7460 43.5247 30.1125
17.9489 39.8714 43.8489 10.7856 38.3789
34.1517 27.8039 31.0061 37.2511 27.1557
20.8875 47.2726 18.1059 25.1792 22.1847
17.9526 28.6398 36.8855 43.2718 17.5861
请问：
随机数到底包含端点不？
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