Σ index Rxn set 8 Ledger /9 Σ#24 Ledger /3 Ledger /15 Σ#12 Matrix 11 Batch 22 Eq pack 19 Matrix 17 Eq pack 13 Batch 16 Ledger /27 Eq pack 7

Symbolic Index /sym/ea4bfa

id=1 · host=au.commstar.world · 2026-10-20 14:53Z

∑_{k=1}^{n} k = n(n+1)/2

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

244K

∫₀^∞ e^(-α²) dα = √π / 2

52K

det| 12 5 ; 4 13 | = 136

∑_{k=1}^{n} k = n(n+1)/2

90K

det| 8 5 ; 3 9 | = 57

91K

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

d/dt [t^3] = 3t^2

100K

∑_{k=1}^{n} k = n(n+1)/2

50K

det| 4 9 ; 7 5 | = -43

det| 9 4 ; 1 10 | = 86

137K

1θ² + 7θ + 4 = 0

197K

det| 1 1 ; 3 2 | = -1

d/dz [z^11] = 11z^10

262K

∇²φ = 0

196K

det| 12 9 ; 3 13 | = 129

\oint_C \vec{F}\cdot d\vec{r} = 0

218K

det| 3 8 ; 6 4 | = -36

F = ma

CaCO₃ → CaO + CO₂

[ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27]