Reaction Log /sym/649cc0
id=1 · host=co.gridbatch.net · 2026-10-17 23:14Z
∑_{k=1}^{n} k = n(n+1)/2
det| 7 4 ; 4 8 | = 40
465K
\frac{1}{7} \sum_{i=1}^{n} i^{2}
154K
\frac{6}{7} \sum_{i=1}^{n} i^{2}
∑_{k=1}^{n} k = n(n+1)/2
60K
∑_{k=1}^{n} k = n(n+1)/2
det| 10 3 ; 4 11 | = 98
119K
11θ² + 3θ + 2 = 0
\frac{3}{2} \sum_{i=1}^{n} i^{2}
173K
det| 7 7 ; 6 8 | = 14
\lim_{α\to 0} \frac{\sin α}{α} = 1
329K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
368K