The second-order Butterworth function is given in Problem 6.6.2a.
a. Find its impulse response and the corresponding step response.
b. Find the 10-90% rise time.
c. Find the expression for the group delay of this function.
Problem 6.6.2
Sketch the amplitude and phase responses of
![1444_92871962-30a8-4d4b-b926-f40de6083238.png](https://secure.tutorsglobe.com/CMSImages/1444_92871962-30a8-4d4b-b926-f40de6083238.png)