Umm.. okay! The problem that I am having is that at n = 5, u[5] = 1 whereas, impulse[5] = 0!
So for n = 5, they are not equal!
I understand that impulse function is with a summation. But that just means it's 1 at n = 0.
Q1: So does it not matter what the impulse is at n = 5?!
Q2: If so, we can then just remove the summation and say:
u[n] = impulse[0] for any index n?!
Also, if they just mean the maginitude of u[n] equals the magnitude of the summation of impulses,
Q3: Why don't they use the magnitude symbol:
|u[n]| = |summation of impulses|?
Q4: Also, why does the summation stop at n?! We can easily have it upto positive infinity (as the magnitude will still be 1)?!
Thanks! I hope someone can answer my doubts in the same order (of questions asked) so that I have a better understanding.
Thanks