Chapter 6.5, Problem 20P

(a)

To determine

To predict the nature of the solution of $f\left(t\right)={\displaystyle \sum _{k=1}^{20}{\left(-1\right)}^{k+1}\delta \left(t-k\frac{\pi }{2}\right)}$.

(b)

To determine

To solution of the function $f\left(t\right)={\displaystyle \sum _{k=1}^{20}{\left(-1\right)}^{k+1}\delta \left(t-k\frac{\pi }{2}\right)}$ and sketch the graph.

(c)

To determine

That what happens when sequence if impulse ends.