Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 23:49Z
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
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det| 4 1 ; 4 5 | = 16
det| 9 4 ; 1 10 | = 86
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∫₀^∞ e^(-x²) dx = √π / 2
\binom{n}{k} = \frac{n!}{k!(n-k)!}
det| 6 6 ; 5 7 | = 12
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\frac{9}{4} \sum_{i=1}^{n} i^{2}
det| 2 6 ; 0 3 | = 6
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5β² + 5β + 3 = 0
F = G m₁m₂ / r²
∫₀^∞ e^(-α²) dα = √π / 2
e^{i\pi} + 1 = 0
e^{i\pi} + 1 = 0