Math Dump /sym/4f623b
id=883331 · host=jp.commstar.world · 2026-09-01 21:07Z
∑_{k=1}^{n} k = n(n+1)/2
det| 4 1 ; 6 5 | = 14
402K
\frac{4}{5} \sum_{i=1}^{n} i^{2}
det| 5 3 ; 7 6 | = 9
398K
∑_{k=1}^{n} k = n(n+1)/2
d/dr [r^5] = 5r^4
4n² + 2n + 7 = 0
det| 4 9 ; 2 5 | = 2
det| 11 4 ; 0 12 | = 132
\lim_{z\to 0} \frac{\sin z}{z} = 1
λ = h/p
ΔS ≥ 0
\frac{7}{4} \sum_{i=1}^{n} i^{2}
det| 9 5 ; 6 10 | = 60