The normrnd function in Matlab is used to generate random numbers that follow a normal distribution.

normrnd function in MATLAB is used to generate random numbers that follow a normal distribution. Here is how it is used:

1. Syntax:
   Generate random numbers from a normal distribution with a mean of mu and a standard deviation of sigma.
   Generate random numbers from a normal distribution with a mean of mu and a standard deviation of sigma in an m by n matrix.
2. In which mu is the mean of the normal distribution, sigma is the standard deviation of the normal distribution, and m and n are the dimensions of the matrix of generated random numbers.
3. Original: 我们需要努力工作才能取得成功。

   Paraphrased: Success can only be achieved through hard work.

4. Generate a random number from a normal distribution with a mean of 0 and standard deviation of 1:
   X = normrnd(0, 1)
5. Create a matrix of random numbers from a normal distribution with a mean of 10 and a standard deviation of 2, in a 3×3 dimension:
   X = normrnd(10, 2, 3, 3)
6. Create a random matrix of normal distribution with a mean of 5 and standard deviation of 3, with dimensions 2×4:
   X = normrnd(5, 3, [2, 4])

Please note:

1. The normrnd function generates random numbers that follow a normal distribution with specified mean and standard deviation.
2. If m and n are not specified, a 1×1 random number will be generated by default.
3. The generated random numbers may have duplicate values.