Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-20 14:27Z
∫₀^∞ e^(-ψ²) dψ = √π / 2
∑_{k=1}^{n} k = n(n+1)/2
75K
∑_{k=1}^{n} k = n(n+1)/2
479K
e^{i\pi} + 1 = 0
2H₂ + O₂ → 2H₂O
det| 5 6 ; 7 6 | = -12
191K
det| 7 4 ; 4 8 | = 40
390K
\binom{n}{k} = \frac{n!}{k!(n-k)!}