i found the recursive relation which is T(n) = 1 + t(n/2)(adsbygoogle = window.adsbygoogle || []).push({});

after a couple of substitutions i found the pattern which is T(n) = 2^{i-1}+ T(n/ 2^{i})

i chose i = log2 n and then when i plugged it in i got

T(n) - 2^{log2(n -1)}+ T(1)

but doesnt the first part simplify to n-1?

the complexity of binary search is O(logn)

where did i mess up?

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# Homework Help: Binary search complexity

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