Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 14:34Z
∑_{k=1}^{n} k = n(n+1)/2
det| 2 6 ; 0 3 | = 6
244K
det| 12 5 ; 4 13 | = 136
∑_{k=1}^{n} k = n(n+1)/2
90K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
∑_{k=1}^{n} k = n(n+1)/2
197K
det| 5 6 ; 1 6 | = 24
196K