Your definition is very clear,and brief.But if you could show it diagramatically,it would hav been better.-ananya Panja
Your definitions seem good to me, both correct and to the point. -Christen Juzeszyn
This is a complete and correct definition. However, I would have worded it differently. The way it is currently is a little confusing regarding the shifted output. I would have said "...yields the same result as time shifting the output signal by the same time shift.", but this definition is nonetheless correct and quite usable. -Zachary Curosh
This is a good definition for a time-variant/invariant system but it was a little confusing on the first read-through. -Aishwar Sabesan
I think definition of a time variant and invariant is very solid. -- Sangwan Han
The definitions are short, to the point, and correct, though I probably would have given "the output" an actual name (such as y(t) (or y[n])) for sake of clarity. -Brian Thomas
Your definition is correct but I would agree with adding a name for the response. - Miles Whittaker
