Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-08-30 02:23Z
2r² + 7r + 7 = 0
∑_{k=1}^{n} k = n(n+1)/2
372K
F = ma
det| 8 2 ; 7 9 | = 58
36K
\oint_C \vec{F}\cdot d\vec{r} = 0
\frac{12}{7} \sum_{i=1}^{n} i^{2}
399K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
252K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
\lim_{ω\to 0} \frac{\sin ω}{ω} = 1
42K
∑_{k=1}^{n} k = n(n+1)/2
∫₀^∞ e^(-r²) dr = √π / 2