Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-19 19:53Z
∂r/∂φ = 2r
det| 5 6 ; 7 6 | = -12
326K
det| 7 4 ; 4 8 | = 40
198K
e^{i\pi} + 1 = 0
∫₀^∞ e^(-x²) dx = √π / 2
155K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
∑_{k=1}^{n} k = n(n+1)/2
366K
∑_{k=1}^{n} k = n(n+1)/2
201K
\oint_C \vec{F}\cdot d\vec{r} = 0
∑_{k=1}^{n} k = n(n+1)/2
319K
\binom{n}{k} = \frac{n!}{k!(n-k)!}