Question: Draw a recursion tree for the recurrence T(n)=T(n-a)+T(a)+cn. Observe the per-level cost of the tree, and then come up with a guess for the solution

Draw a recursion tree for the recurrence T(n)=T(n-a)+T(a)+cn. Observe the per-level cost of the tree, and then come up with a guess for the solution of the total cost. Prove the solution using substitution method.

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