Dat Do edited beginproblem_a_You_a.tex  about 10 years ago

Commit id: b39b35809f4d14e74080a33994cda7b524de0471

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After removing constants,  \\  $2^{n}-n \leq 2^n$, therefore, $W(n)$ belongs to $\textit{O}(2^n)$  \\ \\\\  Since $W(n)$ belongs to both $\Omega(2^n)$ and $\textit{O}(2^n)$,   \\$W(n) = \theta(2^n)$