Please see the attached file for details.
4. Determine if x(n) = cos(pi* n/4)cos(pi* n/4) is periodic. If periodic, calculate period.
5. Determine if x(n) = cos(3t + pi/4) is periodic. If periodic, calculate period.
6. For the RC circuit shown in the figure, find the input/output differential equation.© BrainMass Inc. brainmass.com October 9, 2019, 10:01 pm ad1c9bdddf
The solution demonstrates how to find the period of discrete signals. It also shows how to find the input/output differential equation of the circuit. The solution is detailed and well presented. See attachments for further details including graphs and diagrams.