Symbolic Index /sym/ddc0fb
id=6 · host=au.commstar.world · 2026-08-18 22:14Z
∫₀^∞ e^(-α²) dα = √π / 2
∑_{k=1}^{n} k = n(n+1)/2
240K
det| 3 2 ; 0 4 | = 12
det| 8 2 ; 7 9 | = 58
376K
AgNO₃ + NaCl → AgCl↓ + NaNO₃
\frac{12}{7} \sum_{i=1}^{n} i^{2}
82K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
142K
det| 1 3 ; 5 2 | = -13
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
191K
det| 10 6 ; 7 11 | = 68
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1