Problems:
Signals - System Properties
Determine if the signal is linear,time invariant,casual,and/or memoryless.
1. d2y/dt2 + 5 dy/dt + 8y(t) = dx/dt + 3x(t)
2. dy/dt + cos(t)y(t) = 3x(t)
3. y[n] = x[4n]
4. y(t) = 4 dx/dt + 3x(t)
5. dy/dt + cos(t)y(t) = 3x(t)
6. y[n + 1] + y[n} = 2x[n + 1] - x[n]