Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-18 19:20Z
\lim_{n\to 0} \frac{\sin n}{n} = 1
∫₀^∞ e^(-y²) dy = √π / 2
428K
∑_{k=1}^{n} k = n(n+1)/2
238K
∑_{k=1}^{n} k = n(n+1)/2
∫₀^∞ e^(-n²) dn = √π / 2
268K
det| 9 1 ; 6 10 | = 84
det| 7 4 ; 4 8 | = 40
330K
∫₀^∞ e^(-θ²) dθ = √π / 2
Fe₂O₃ + 3CO → 2Fe + 3CO₂
\frac{2}{2} \sum_{i=1}^{n} i^{2}
7K
AgNO₃ + NaCl → AgCl↓ + NaNO₃
F = G m₁m₂ / r²
\binom{n}{k} = \frac{n!}{k!(n-k)!}
\frac{2}{6} \sum_{i=1}^{n} i^{2}