Σ index Rxn set 20 Rxn set 14 Batch 4 Ledger /15 Eq pack 7 Ledger /9 Matrix 17 Matrix 11 Batch 10 Eq pack 13 Batch 22 Ledger /21

Field Notes / Σ /sym/3971f7

id=377707 · host=uk.mattivster.me · 2026-08-30 18:45Z

\binom{n}{k} = \frac{n!}{k!(n-k)!}

d/dx [x^3] = 3x^2

277K

ΔS ≥ 0

306K

∑_{k=1}^{n} k = n(n+1)/2

d/dx [x^3] = 3x^2

382K

12z² + 1z + 7 = 0

218K

1t² + 9t + 7 = 0

CaCO₃ → CaO + CO₂

201K

CH₄ + 2O₂ → CO₂ + 2H₂O

428K

∫₀^∞ e^(-t²) dt = √π / 2

\frac{11}{6} \sum_{i=1}^{n} i^{2}

350K

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

141K

∂r/∂y = 9r

3t² + 1t + 5 = 0

21K

ΔS ≥ 0

e^{i\pi} + 1 = 0

det| 11 3 ; 3 12 | = 123