Reaction Log /sym/649cc0
id=1 · host=co.gridbatch.net · 2026-10-17 23:14Z
∑_{k=1}^{n} k = n(n+1)/2
\frac{6}{7} \sum_{i=1}^{n} i^{2}
\binom{n}{k} = \frac{n!}{k!(n-k)!}
60K
∑_{k=1}^{n} k = n(n+1)/2
\lim_{α\to 0} \frac{\sin α}{α} = 1
152K
11θ² + 3θ + 2 = 0
Fe₂O₃ + 3CO → 2Fe + 3CO₂
173K
det| 7 7 ; 6 8 | = 14
7ψ² + 4ψ + 3 = 0
\frac{2}{2} \sum_{i=1}^{n} i^{2}
314K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
180K