Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 07:54Z
∑_{k=1}^{n} k = n(n+1)/2
\frac{2}{2} \sum_{i=1}^{n} i^{2}
46K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
468K
\frac{6}{1} \sum_{i=1}^{n} i^{2}
\frac{3}{2} \sum_{i=1}^{n} i^{2}
289K
det| 7 4 ; 4 8 | = 40
278K
∂x/∂θ = 8x
\binom{n}{k} = \frac{n!}{k!(n-k)!}
177K
3φ² + 4φ + 2 = 0
det| 4 8 ; 3 5 | = -4
358K
det| 5 9 ; 7 6 | = -33
316K
∑_{k=1}^{n} k = n(n+1)/2
11K