Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-19 16:51Z
det| 6 2 ; 7 7 | = 28
det| 1 4 ; 2 2 | = -6
479K
∫₀^∞ e^(-x²) dx = √π / 2
∑_{k=1}^{n} k = n(n+1)/2
102K
\frac{1}{3} \sum_{i=1}^{n} i^{2}
\frac{2}{2} \sum_{i=1}^{n} i^{2}
264K
∑_{k=1}^{n} k = n(n+1)/2
276K
d/dψ [ψ^7] = 7ψ^6
det| 9 4 ; 1 10 | = 86
250K
F = G m₁m₂ / r²
∑_{k=1}^{n} k = n(n+1)/2
62K
AgNO₃ + NaCl → AgCl↓ + NaNO₃
det| 7 2 ; 3 8 | = 50
164K
4y² + 9y + 0 = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}