Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 02:00Z
∇²x = 0
8n² + 3n + 6 = 0
∑_{k=1}^{n} k = n(n+1)/2
144K
∂x/∂α = 7x
\binom{n}{k} = \frac{n!}{k!(n-k)!}
86K
\lim_{γ\to 0} \frac{\sin γ}{γ} = 1
det| 7 4 ; 4 8 | = 40
224K
det| 5 2 ; 3 6 | = 24
234K
\lim_{β\to 0} \frac{\sin β}{β} = 1
∑_{k=1}^{n} k = n(n+1)/2
354K
AgNO₃ + NaCl → AgCl↓ + NaNO₃