Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 14:18Z
∑_{k=1}^{n} k = n(n+1)/2
CH₄ + 2O₂ → CO₂ + 2H₂O
52K
det| 12 5 ; 4 13 | = 136
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
90K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 4 9 ; 7 5 | = -43
det| 7 4 ; 4 8 | = 40
137K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
197K
det| 1 1 ; 3 2 | = -1
det| 4 6 ; 4 5 | = -4
262K
∑_{k=1}^{n} k = n(n+1)/2
196K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
218K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
299K