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15
2000 HMMT RMT Team #15
2000 HMMT RMT Team #15
Source:
March 8, 2024
algebra
calculus
Problem Statement
lim
n
→
∞
n
r
1
−
cos
2
π
n
2
=
?
\lim_{n \to \infty} nr\sqrt[2]{1-\cos \frac{2\pi}{n}}=?
n
→
∞
lim
n
r
2
1
−
cos
n
2
π
=
?
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