Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 20:21Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
∑_{k=1}^{n} k = n(n+1)/2
46K
∫₀^∞ e^(-θ²) dθ = √π / 2
468K
CaCO₃ → CaO + CO₂
e^{i\pi} + 1 = 0
det| 5 2 ; 3 6 | = 24
339K
det| 7 4 ; 4 8 | = 40
177K
∂x/∂r = 4x
∑_{k=1}^{n} k = n(n+1)/2
121K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
∑_{k=1}^{n} k = n(n+1)/2
399K
det| 12 4 ; 4 13 | = 140