Question: Please solve this question 2. Show that yr in the following model has a unit root AYt = 0.3 X Aytl + 0.2 X AytZ

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2. Show that yr in the following model has a unit root AYt = 0.3 X Aytl + 0.2 X AytZ + 6t has a unit root. (hint: write down the characteristic function and verify 1 is a solution/root. Hint2: You don't need to solve a complicated equation do get the answer)
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