Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-19 16:15Z
det| 6 2 ; 7 7 | = 28
∫₀^∞ e^(-y²) dy = √π / 2
8K
∫₀^∞ e^(-x²) dx = √π / 2
∑_{k=1}^{n} k = n(n+1)/2
102K
det| 9 4 ; 1 10 | = 86
57K
\frac{1}{3} \sum_{i=1}^{n} i^{2}
d/dψ [ψ^7] = 7ψ^6
det| 3 3 ; 4 4 | = 0
250K
F = G m₁m₂ / r²
\oint_C \vec{F}\cdot d\vec{r} = 0
62K
AgNO₃ + NaCl → AgCl↓ + NaNO₃
4y² + 9y + 0 = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}