Given the following difference equation with the input output relationship of a certain initially relaxed DSP system (all initial conditions are zero),
![2337_a836ab0d-c2c0-47eb-ac63-f5e4ae4b0abb.png](https://secure.tutorsglobe.com/CMSImages/2337_a836ab0d-c2c0-47eb-ac63-f5e4ae4b0abb.png)
a. Find the impulse response sequence y(n) due to the impulse sequence δ(n);
b. Find the output response of the system when the unit step function u(n) is applied.