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Concrete mathematics : a foundation for computer science

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9.6 FINAL SUMMATIONS 465<br />

<strong>for</strong>mula does give us O(n mP1 ) <strong>for</strong> arbitrarily large m, even though we haven’t<br />

evaluated any remainders explicitly.<br />

Summation 1, again: Recapitulation and generalization.<br />

Be<strong>for</strong>e we leave our training wheels, let’s review what we just did from<br />

a somewhat higher perspective. We began with a sum<br />

S, = x f(k)<br />

l

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