Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 06:12Z
det| 8 1 ; 6 9 | = 66
∑_{k=1}^{n} k = n(n+1)/2
244K
∑_{k=1}^{n} k = n(n+1)/2
1n² + 9n + 0 = 0
det| 9 4 ; 1 10 | = 86
100K
det| 11 9 ; 5 12 | = 87
137K
∑_{k=1}^{n} k = n(n+1)/2
197K