Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 14:56Z
∑_{k=1}^{n} k = n(n+1)/2
det| 12 5 ; 4 13 | = 136
\frac{2}{2} \sum_{i=1}^{n} i^{2}
91K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 4 9 ; 7 5 | = -43
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
137K
\frac{8}{6} \sum_{i=1}^{n} i^{2}
197K
det| 1 1 ; 3 2 | = -1
∑_{k=1}^{n} k = n(n+1)/2
262K
\frac{12}{7} \sum_{i=1}^{n} i^{2}
196K
det| 12 9 ; 3 13 | = 129