Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 20:59Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
∑_{k=1}^{n} k = n(n+1)/2
46K
CaCO₃ → CaO + CO₂
\oint_C \vec{F}\cdot d\vec{r} = 0
289K
e^{i\pi} + 1 = 0
det| 12 9 ; 5 13 | = 111
339K
det| 9 4 ; 1 10 | = 86
177K
∂x/∂r = 4x
det| 4 8 ; 3 5 | = -4
358K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
∑_{k=1}^{n} k = n(n+1)/2
399K
\frac{3}{2} \sum_{i=1}^{n} i^{2}
316K
det| 12 4 ; 4 13 | = 140