Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 14:09Z
∑_{k=1}^{n} k = n(n+1)/2
det| 11 9 ; 0 12 | = 132
244K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
52K
det| 12 5 ; 4 13 | = 136
\frac{12}{7} \sum_{i=1}^{n} i^{2}
90K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
\binom{n}{k} = \frac{n!}{k!(n-k)!}
50K
det| 4 9 ; 7 5 | = -43
det| 10 5 ; 4 11 | = 90
197K
det| 9 4 ; 1 10 | = 86
262K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
196K