Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 20:51Z
\binom{n}{k} = \frac{n!}{k!(n-k)!}
∑_{k=1}^{n} k = n(n+1)/2
46K
det| 7 4 ; 4 8 | = 40
468K
CaCO₃ → CaO + CO₂
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
289K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
278K
e^{i\pi} + 1 = 0
∂x/∂r = 4x
C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂
358K
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
121K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
∑_{k=1}^{n} k = n(n+1)/2
399K
\lim_{t\to 0} \frac{\sin t}{t} = 1
316K
det| 12 4 ; 4 13 | = 140