Create the array of square roots of n for n=1,2,...,9.

a1 = sqrt([1:9])

Create an array of 15 random real values uniformly distributed between 0 and 10.

generate/random a2 0 10 15
or
a2 = ran([0:15])*10

Create a 5×3 array of integers chosen randomly between 1 and 100.

a3 = fold(int(ran([1:15])*99+1),5)

  Basic tasks
  Create and plot an array