Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 00:09Z
4y² + 8y + 1 = 0
∑_{k=1}^{n} k = n(n+1)/2
468K
2H₂ + O₂ → 2H₂O
∫₀^∞ e^(-x²) dx = √π / 2
278K
\frac{10}{7} \sum_{i=1}^{n} i^{2}
det| 7 8 ; 0 8 | = 56
339K
\frac{5}{8} \sum_{i=1}^{n} i^{2}
177K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
358K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
121K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
11K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
387K
det| 8 4 ; 3 9 | = 60
144K
\lim_{ψ\to 0} \frac{\sin ψ}{ψ} = 1
276K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
256K