Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 02:05Z
∇²x = 0
det| 7 4 ; 4 8 | = 40
168K
∑_{k=1}^{n} k = n(n+1)/2
446K
8n² + 3n + 6 = 0
∑_{k=1}^{n} k = n(n+1)/2
144K
∂x/∂α = 7x
det| 5 2 ; 3 6 | = 24
86K
\lim_{γ\to 0} \frac{\sin γ}{γ} = 1
\lim_{β\to 0} \frac{\sin β}{β} = 1
\binom{n}{k} = \frac{n!}{k!(n-k)!}
AgNO₃ + NaCl → AgCl↓ + NaNO₃
∇²n = 0