Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-18 23:03Z
d/dn [n^4] = 4n^3
\binom{n}{k} = \frac{n!}{k!(n-k)!}
384K
\lim_{θ\to 0} \frac{\sin θ}{θ} = 1
∑_{k=1}^{n} k = n(n+1)/2
163K
iħ ∂ψ/∂t = Ĥψ
det| 9 4 ; 1 10 | = 86
305K
\frac{2}{4} \sum_{i=1}^{n} i^{2}
\frac{8}{7} \sum_{i=1}^{n} i^{2}
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det| 5 7 ; 5 6 | = -5
Fe₂O₃ + 3CO → 2Fe + 3CO₂
iħ ∂ψ/∂t = Ĥψ
2r² + 6r + 7 = 0
5θ² + 9θ + 7 = 0