Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 20:53Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
det| 5 9 ; 7 6 | = -33
46K
CaCO₃ → CaO + CO₂
∑_{k=1}^{n} k = n(n+1)/2
289K
e^{i\pi} + 1 = 0
∑_{k=1}^{n} k = n(n+1)/2
339K
∂x/∂r = 4x
\oint_C \vec{F}\cdot d\vec{r} = 0
358K
det| 12 9 ; 5 13 | = 111
121K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 9 4 ; 1 10 | = 86
399K
∑_{k=1}^{n} k = n(n+1)/2
316K
det| 12 4 ; 4 13 | = 140
det| 11 9 ; 0 12 | = 132
11K
\frac{4}{5} \sum_{i=1}^{n} i^{2}