Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 00:10Z
4y² + 8y + 1 = 0
\lim_{ψ\to 0} \frac{\sin ψ}{ψ} = 1
468K
2H₂ + O₂ → 2H₂O
\frac{7}{7} \sum_{i=1}^{n} i^{2}
289K
\frac{10}{7} \sum_{i=1}^{n} i^{2}
C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂
358K
det| 10 1 ; 1 11 | = 109
121K
∑_{k=1}^{n} k = n(n+1)/2
399K
∑_{k=1}^{n} k = n(n+1)/2
316K
∑_{k=1}^{n} k = n(n+1)/2
11K
∑_{k=1}^{n} k = n(n+1)/2
144K
det| 8 6 ; 1 9 | = 66
97K
∫₀^∞ e^(-r²) dr = √π / 2
338K
d/dt [t^12] = 12t^11
276K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
346K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
256K
∑_{k=1}^{n} k = n(n+1)/2
348K