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y[n] =b(ax[n] +x[n-1]+ax[n-2]) where a&b >0. Find the frequency response of the system H(e^jw). Determine the...

y[n] =b(ax[n] +x[n-1]+ax[n-2]) where a&b >0. Find the frequency response of the system H(e^jw). Determine the values of a & b, if the magnitude response of the filter at w = 0 is 1 and at w =pi÷2 is 0.5.
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Please find the attached files to see the solution and for any confusion regarding the solution, please comment and I will reply asap.

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