Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 14:52Z
∑_{k=1}^{n} k = n(n+1)/2
\frac{2}{2} \sum_{i=1}^{n} i^{2}
244K
det| 12 5 ; 4 13 | = 136
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 7 4 ; 4 8 | = 40
137K
\frac{12}{7} \sum_{i=1}^{n} i^{2}
262K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
196K
\frac{2}{2} \sum_{i=1}^{n} i^{2}
299K