Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 06:24Z
det| 8 1 ; 6 9 | = 66
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
91K
1n² + 9n + 0 = 0
det| 9 4 ; 1 10 | = 86
50K
det| 5 3 ; 2 6 | = 24
137K
∑_{k=1}^{n} k = n(n+1)/2
197K
det| 10 5 ; 4 11 | = 90
262K