Field Notes / Σ /sym/b26508
id=1 · host=uk.mattivster.me · 2026-10-18 17:31Z
∫₀^∞ e^(-φ²) dφ = √π / 2
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
144K
det| 1 9 ; 5 2 | = -43
\lim_{t\to 0} \frac{\sin t}{t} = 1
90K
det| 7 2 ; 7 8 | = 42
438K
AgNO₃ + NaCl → AgCl↓ + NaNO₃
\binom{n}{k} = \frac{n!}{k!(n-k)!}
29K
\frac{12}{7} \sum_{i=1}^{n} i^{2}
94K
∑_{k=1}^{n} k = n(n+1)/2
390K