Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-19 06:01Z
∑_{k=1}^{n} k = n(n+1)/2
Fe₂O₃ + 3CO → 2Fe + 3CO₂
479K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
8K
det| 5 9 ; 4 6 | = -6
det| 11 5 ; 0 12 | = 132
102K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
57K
F = G m₁m₂ / r²
\oint_C \vec{F}\cdot d\vec{r} = 0
276K
9ω² + 3ω + 5 = 0
\oint_C \vec{F}\cdot d\vec{r} = 0
257K
\lim_{t\to 0} \frac{\sin t}{t} = 1
250K
9θ² + 8θ + 7 = 0
∑_{k=1}^{n} k = n(n+1)/2
62K
det| 7 4 ; 4 8 | = 40
256K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
CaCO₃ → CaO + CO₂
∫₀^∞ e^(-θ²) dθ = √π / 2