HP 48gII - Manual (Page 521)

Page 16-43
The latter result can be defined as a function, FW(X), as follows (cutting and
pasting the last result into the command):
We can now plot the real part of this function. Change the decimal mode to
Standard, and use the following:
The solution is shown below:
Fourier Transforms
Before presenting the concept of Fourier transforms, we’ll discuss the general
definition of an integral transform. In general, an integral transform is a
transformation that relates a function f(t) to a new function F(s) by an