Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 22:55Z
F = G m₁m₂ / r²
\binom{n}{k} = \frac{n!}{k!(n-k)!}
2H₂ + O₂ → 2H₂O
det| 7 7 ; 4 8 | = 28
100K
∑_{k=1}^{n} k = n(n+1)/2
137K
∑_{k=1}^{n} k = n(n+1)/2
197K
det| 11 9 ; 5 12 | = 87
262K