Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-08-25 02:13Z
det| 10 4 ; 4 11 | = 94
∑_{k=1}^{n} k = n(n+1)/2
341K
∇ × E = −∂B/∂t
det| 8 2 ; 7 9 | = 58
268K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
\frac{12}{7} \sum_{i=1}^{n} i^{2}
102K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
387K
PV = nRT
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
173K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O