![4. Suppose that the frequency response of a filter is given by:a) Write the difference equation that relates the input a[n] to the output y[n].(b) What is the output if the input is x[n] = δ [n]?(c) If the input is of the form z[n] = Acos(ŵn + pi), for what values of w will the output y[n] be zero?](https://i0.wp.com/electricalstudent.com/wp-content/uploads/2023/07/98eae428-2304-4a83-83da-30047d7e263c-4844-000007524d0174bf_file-639x425.jpg)
4. Suppose that the frequency response of a filter is given by:a) Write the difference equation that relates the input a[n] to the output y[n].(b) What is the output if the input is x[n] = δ [n]?(c) If the input is of the form z[n] = Acos(ŵn + pi), for what values of w will the output y[n] be zero?
4. Suppose that the frequency response of a filter is given by:a) Write the difference equation that relates the input a[n] to the output y[n].(b) What is the output if the input is x[n] = δ [n]?(c) If the input is of the form z[n] = Acos(ŵn + pi), for what values of w will the output y[n] be zero?