5.) T(n) = 2T (n/6) + √n f(n) = versus nog a = Which is growing faster: f(n) or nlogs a? Which case of the Master Theorem does that potentially put us in? If you're potentially in case one or three, is it possible to find an epsilon which makes either f(n) € O(noga-) (if you're in case one) or f(n) = (nloa+e) (if you're in case three) true? Choose one or show an inequality. If you're potentially in case three and there is an e, try to find a constant d < 1 such that af (n/b) ≤ df (n) for large enough n's. What can you conclude?

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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5.) T(n) = 2T (n/6) + √n
f(n) =
Which is growing faster: f(n) or nlogs a?
Which case of the Master Theorem does that potentially put us in?
log, a
versus n'
=
If you're potentially in case one or three, is it possible to find an epsilon which makes
either f(n) = O(nosa-) (if you're in case one) or f(n) € (nosa+) (if you're in
case three) true? Choose one or show an inequality.
If you're potentially in case three and there is an e, try to find a constant d < 1 such
that af (n/b) ≤ df (n) for large enough n's.
What can you conclude?
Transcribed Image Text:5.) T(n) = 2T (n/6) + √n f(n) = Which is growing faster: f(n) or nlogs a? Which case of the Master Theorem does that potentially put us in? log, a versus n' = If you're potentially in case one or three, is it possible to find an epsilon which makes either f(n) = O(nosa-) (if you're in case one) or f(n) € (nosa+) (if you're in case three) true? Choose one or show an inequality. If you're potentially in case three and there is an e, try to find a constant d < 1 such that af (n/b) ≤ df (n) for large enough n's. What can you conclude?
Theorem 1 (Master Theorem).
Let a ≥ 1 and b> 1 be constants, let f(n) be a function f: N→ R+, and let T(n) be defined on
the nonnegative integers by the recurrence
T(n)= aT(n/b) + f(n).
Then T(n) has the following asymptotic bounds:
1. if f(n) = O(nlogs a-E) for some constant e > 0, then T(n) = (nossa),
2. if f(n) = (nlos a) then T(n) = (nloga log n), and
3. if f(n) = N(n¹og a+s) for some e > 0 and if af (n/b) ≤df (n) for some constant d < 1 and
all sufficiently large n, then T(n) = (f(n)).
Use the Master Theorem above to solve the following recurrences when possible (note
that not every blank needs to be filled in in every problem):
Transcribed Image Text:Theorem 1 (Master Theorem). Let a ≥ 1 and b> 1 be constants, let f(n) be a function f: N→ R+, and let T(n) be defined on the nonnegative integers by the recurrence T(n)= aT(n/b) + f(n). Then T(n) has the following asymptotic bounds: 1. if f(n) = O(nlogs a-E) for some constant e > 0, then T(n) = (nossa), 2. if f(n) = (nlos a) then T(n) = (nloga log n), and 3. if f(n) = N(n¹og a+s) for some e > 0 and if af (n/b) ≤df (n) for some constant d < 1 and all sufficiently large n, then T(n) = (f(n)). Use the Master Theorem above to solve the following recurrences when possible (note that not every blank needs to be filled in in every problem):
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