Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-18 23:25Z
d/dn [n^4] = 4n^3
\frac{8}{7} \sum_{i=1}^{n} i^{2}
385K
\lim_{θ\to 0} \frac{\sin θ}{θ} = 1
det| 4 2 ; 6 5 | = 8
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
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iħ ∂ψ/∂t = Ĥψ
det| 7 2 ; 7 8 | = 42
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∫₀^∞ e^(-θ²) dθ = √π / 2
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\frac{2}{4} \sum_{i=1}^{n} i^{2}
Fe₂O₃ + 3CO → 2Fe + 3CO₂
293K
det| 5 7 ; 5 6 | = -5
∑_{k=1}^{n} k = n(n+1)/2
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Fe₂O₃ + 3CO → 2Fe + 3CO₂
det| 7 4 ; 4 8 | = 40
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det| 2 3 ; 5 3 | = -9
368K
2r² + 6r + 7 = 0