Recurrence Relation T(n)=2 T(n-1)+1 | Decreasing function

 Example Video





T(n) = 2T(n − 1) + 1 
= 2 (2T(n − 2) + 1) + 1 
= 4T(n − 2) + 3 
= 4 (2T(n − 3) + 1) + 3 
= 8T(n − 2) + 7

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