What is the usage of rand in MATLAB?

In MATLAB, the function rand is used to generate random numbers. Its usage is as follows:

1. Generate a random number between 0 and 1.
2. Generate a random number and assign it to variable r.
3. Create a random matrix with dimensions of m rows and n columns.
4. Generate a random matrix of size m by n.
5. Create a matrix of random integers with m rows and n columns (ranging from 1 to k).
6. Generate a random array of size m by n with elements ranging from 1 to k.
7. Generate a random integer matrix with m rows and n columns (range is [a, b]):
8. Generate a random array of size m x n with values ranging from a to b.
9. Create a matrix with m rows and n columns of random numbers that follow a normal distribution with mean mu and standard deviation sigma.
10. r is equal to the mean plus the standard deviation multiplied by a random sample from a normal distribution with dimensions m by n.

It is important to note that the random numbers generated by the rand function are uniformly distributed. If you need random numbers with a different distribution, you can use other random number functions such as randn (for generating random numbers following a normal distribution) or randi (for generating integer random numbers).