Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 00:47Z
4y² + 8y + 1 = 0
\frac{8}{7} \sum_{i=1}^{n} i^{2}
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∑_{k=1}^{n} k = n(n+1)/2
468K
2H₂ + O₂ → 2H₂O
det| 9 4 ; 1 10 | = 86
289K
CH₄ + 2O₂ → CO₂ + 2H₂O
278K
\frac{10}{7} \sum_{i=1}^{n} i^{2}
\binom{n}{k} = \frac{n!}{k!(n-k)!}
177K
\lim_{β\to 0} \frac{\sin β}{β} = 1
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
399K
\lim_{α\to 0} \frac{\sin α}{α} = 1
316K
∑_{k=1}^{n} k = n(n+1)/2
11K