Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-19 16:22Z
det| 6 2 ; 7 7 | = 28
\binom{n}{k} = \frac{n!}{k!(n-k)!}
479K
∫₀^∞ e^(-x²) dx = √π / 2
\oint_C \vec{F}\cdot d\vec{r} = 0
57K
\frac{1}{3} \sum_{i=1}^{n} i^{2}
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
264K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
276K
d/dψ [ψ^7] = 7ψ^6
det| 9 9 ; 5 10 | = 45
257K
F = G m₁m₂ / r²
∑_{k=1}^{n} k = n(n+1)/2
164K