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
\frac{12}{7} \sum_{i=1}^{n} i^{2}
8K
∫₀^∞ e^(-x²) dx = √π / 2
∑_{k=1}^{n} k = n(n+1)/2
102K
\frac{1}{3} \sum_{i=1}^{n} i^{2}
d/dψ [ψ^7] = 7ψ^6
det| 9 4 ; 1 10 | = 86
257K
\frac{12}{6} \sum_{i=1}^{n} i^{2}
250K
F = G m₁m₂ / r²
∫₀^∞ e^(-θ²) dθ = √π / 2
AgNO₃ + NaCl → AgCl↓ + NaNO₃
∂α/∂n = 9α