Question is asked with an intent to get/let understand how to verify Asymptotic Θ notation. A Homework question. I am to show that n ≠ Θ(logn)
Solution: Yes, n ≠ Θ(logn).
c1logn ≤ n ≤ c2logn => c2≥n/logn, Ɐ n≥n0 - Impossible
Why c2≥n/logn
is not possible?