[…] The SAS IML language does not support recursive calls. However, you can emulate recursion by defining a sequence of functions that have DIFFERENT NAMES, such as F1, F2, F3, and so forth. The F1 and F2 functions can return 1 (the base case), whereas the F3 function can return the sum of the results from calling F1 and F2. You can continue this process as shown in the following program. Notice that I use a dummy variable with a default value so that each function can be called without specifying any…. …