Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 14:55Z
∑_{k=1}^{n} k = n(n+1)/2
det| 10 3 ; 4 11 | = 98
244K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
52K
det| 12 5 ; 4 13 | = 136
det| 7 4 ; 4 8 | = 40
90K
det| 9 9 ; 5 10 | = 45
91K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
∑_{k=1}^{n} k = n(n+1)/2
100K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
50K
det| 4 9 ; 7 5 | = -43
\binom{n}{k} = \frac{n!}{k!(n-k)!}
137K
det| 1 1 ; 3 2 | = -1
\frac{11}{6} \sum_{i=1}^{n} i^{2}
196K