Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 07:53Z
∑_{k=1}^{n} k = n(n+1)/2
\binom{n}{k} = \frac{n!}{k!(n-k)!}
46K
\frac{6}{1} \sum_{i=1}^{n} i^{2}
∂x/∂θ = 8x
\binom{n}{k} = \frac{n!}{k!(n-k)!}
339K
CH₄ + 2O₂ → CO₂ + 2H₂O
177K
3φ² + 4φ + 2 = 0
det| 2 3 ; 5 3 | = -9
358K
5ω² + 6ω + 0 = 0
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
399K
∫₀^∞ e^(-θ²) dθ = √π / 2
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
11K
∇²θ = 0
e^{i\pi} + 1 = 0
3t² + 3t + 7 = 0