Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-20 06:10Z
det| 8 1 ; 6 9 | = 66
det| 7 4 ; 4 8 | = 40
244K
det| 2 7 ; 7 3 | = -43
52K
∑_{k=1}^{n} k = n(n+1)/2
1n² + 9n + 0 = 0
det| 1 2 ; 7 2 | = -12
50K
∑_{k=1}^{n} k = n(n+1)/2
137K