I liked how you gave specific examples with your proofs. It helps the reader understand what's going on. Your explanations for memoryless systems and systems with memory was clear. -Phil Cannon
Your examples are correct and make the definition more clearer. Actually I chose memoryless or with memory,too. But I've got a question. whether y(t)=1(or any constant)is memoryless or not? - Hetong Li
The definition you showed was very clear and the examples really emphasized well what you were saying. -Eric Smith
What a piece of art, i like the way you explained why one of them was memoryless even though there was some time t outside. -Jonathan Morales
THE EXAMPLES given for systems with memory is WRONG. (t-3)^2 is a scalar.So system is memory-less. -Jayanth
Virgil explains quite clearly why the exam with t-3 is correct. If the example were x(t-3) then the system would have memory. -Allen Humphreys
The definitions are clear and concise. The examples are helpful precisely because they use the t-3 which can obviously confuse people. A memoryless system can use the t parameter as a scalar, as demonstrated, whereas a system with memory must use x(t-3) as part of its function to refer to the function at a different time. -Emily Blount
