Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 00:02Z
4y² + 8y + 1 = 0
2H₂ + O₂ → 2H₂O
\binom{n}{k} = \frac{n!}{k!(n-k)!}
289K
∑_{k=1}^{n} k = n(n+1)/2
278K
\frac{10}{7} \sum_{i=1}^{n} i^{2}
det| 7 4 ; 4 8 | = 40
177K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
121K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
316K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
11K