Dat Do edited beginproblem_a_You_a.tex  about 10 years ago

Commit id: f47ccf92bcf29e8c37b06d72948d6035f1d1d4a7

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After removing constants, we find that  \\  $2^{n}-n \geq 2^n - \frac{2^n}{2}$ which is true for $n > 2$  \\Since $\frac{2^n}{2}$ $2^n-\frac{2^n}{2}$  belongs to $\Omega(2^n)$, $W(n)$ must as well since it is greater than or equal to $\frac{2^n}{2}$ \\\\  Now we will find the upper bound for $W(n) = 2^{n+1}-n-2$  \\\\