In other words, shifting the input by t0t_0t0 and then passing it through the system should give you the same signal as passing the original input through the system and then shifting the output by t0t_0t0.
y(t)=sin(x(t)) is this TI?
Key insight
In other words, shifting the input by t0t_0t0 and then passing it through the system should give you the same signal as passing the original input through the system and then shifting the output by t0t_0t0.
y(t)=sin(x(t)) is this TI?