Question: I don't understand how the recursion tree method works. I really don't. For the recurrence T(n)=T(n-1)+1, that is just a straight tree right? It would

I don't understand how the recursion tree method works. I really don't. For the recurrence T(n)=T(n-1)+1, that is just a straight tree right? It would have n levels? But how do we determine the cost?

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