Gave some more examples of how changes to a signal x(t) affect the Fourier
transform X(jw).
For example, x'(t) <-> jw X(jw). This was then used to simplify computation
of a Fourier transform. 
Investigated duality - used to compute a difficult Fourier transform.
Saw that convolution in the time domain corresponds to product in the frequency domain. Used this to evaluate a convolution by reducing it to a partial fractions problem.