== MEMORYLESS ==
A system is considered memoryless if the output signal depends ONLY on the present value of t and not any past or future values. Think of it as a signal with severe amnesia that, to get the correct value, can neither remember the past nor predict the future.
Examples
y(t) = x(t+3) is NOT memoryless because the output y(t) depends on a value of the signal x(t) from three seconds later.
y(t) = (t+3) + x(t) IS memoryless because the output y(t) depends only on the present value of t, even though it may seem like there is a time shift at first glance.
