Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 14:53Z
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
52K
det| 12 5 ; 4 13 | = 136
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
∫₀^∞ e^(-θ²) dθ = √π / 2
137K
∑_{k=1}^{n} k = n(n+1)/2
197K
det| 11 9 ; 5 12 | = 87
262K