Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 14:10Z
∑_{k=1}^{n} k = n(n+1)/2
det| 5 6 ; 1 6 | = 24
52K
det| 12 5 ; 4 13 | = 136
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
100K
det| 4 9 ; 7 5 | = -43
\binom{n}{k} = \frac{n!}{k!(n-k)!}
137K
∑_{k=1}^{n} k = n(n+1)/2
197K
\frac{8}{6} \sum_{i=1}^{n} i^{2}
262K
\frac{11}{6} \sum_{i=1}^{n} i^{2}
196K