Whether the stock goes up tomorrow depends upon whether it increased today and yesterday. If the stock

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Whether the stock goes up tomorrow depends upon whether it increased today and yesterday. If the stock increased today and yesterday, it will decrease tomorrow with probability1 . If the stock increased today and decreased yesterday, it will decrease tomorrow with probability 2 . If the stock decreased today and increased yesterday, it will decrease tomorrow with probability 3 . Finally, if the stock decreased today and yesterday, it will decrease tomorrow with probability 4 . a) Define the