Problem 4: A DT system is described by 10y[n + 2] + 3y[n+1]-y[n] = x[n + 2]. (a) Express the difference equation in operator notation E. (Points: 5) (b) Find the closed form solution of zero-input response yo[n] by characteristics equation method when yo[1] = 3, and yo[2] = 1. (Points: 20)
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The given difference equation is: $$10y[n + 2] + 3y[n+1] - y[n] = x[n + 2]$$ In operator notation, we have: $$y[n+k] = E^k y[n]$$ So, the equation becomes: $$10E^2 y[n] + 3E y[n] - y[n] = x[n + 2]$$ $$(10E^2 + 3E - 1)y[n] = x[n + 2]$$ Show more…
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