Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 00:05Z
4y² + 8y + 1 = 0
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
468K
2H₂ + O₂ → 2H₂O
det| 4 5 ; 1 5 | = 15
289K
det| 1 6 ; 3 2 | = -16
278K
\frac{10}{7} \sum_{i=1}^{n} i^{2}
det| 3 7 ; 3 4 | = -9
177K
det| 12 7 ; 7 13 | = 107
358K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
121K
det| 3 6 ; 1 4 | = 6
316K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
11K
\frac{12}{4} \sum_{i=1}^{n} i^{2}
387K
det| 8 4 ; 3 9 | = 60
97K
∑_{k=1}^{n} k = n(n+1)/2
276K
\frac{6}{3} \sum_{i=1}^{n} i^{2}
346K