Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-20 17:31Z
∑_{k=1}^{n} k = n(n+1)/2
det| 5 9 ; 7 6 | = -33
75K
8β² + 2β + 0 = 0
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
191K
\lim_{r\to 0} \frac{\sin r}{r} = 1
det| 12 1 ; 1 13 | = 155