You are given a “canned” program that computes the 2-D, DFT pair. However, it is not known...

You are given a “canned” program that computes the 2-D, DFT pair. However, it is not known in which of the two equations the 1/MN term is included or if it was split as two constants in front of both the forward and inverse transforms. How can you find where the term(s) is (are) included if this information is not available in the documentation?