Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-18 00:23Z
∑_{k=1}^{n} k = n(n+1)/2
\oint_C \vec{F}\cdot d\vec{r} = 0
320K
\oint_C \vec{F}\cdot d\vec{r} = 0
\lim_{ψ\to 0} \frac{\sin ψ}{ψ} = 1
90K
\frac{3}{4} \sum_{i=1}^{n} i^{2}
438K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
AgNO₃ + NaCl → AgCl↓ + NaNO₃
394K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
29K
7z² + 2z + 5 = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
211K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
∫₀^∞ e^(-t²) dt = √π / 2
390K
∑_{k=1}^{n} k = n(n+1)/2
352K
\frac{4}{6} \sum_{i=1}^{n} i^{2}
16K