Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-19 20:27Z
det| 1 9 ; 3 2 | = -25
\binom{n}{k} = \frac{n!}{k!(n-k)!}
8K
C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂
AgNO₃ + NaCl → AgCl↓ + NaNO₃
57K
det| 11 4 ; 0 12 | = 132
\binom{n}{k} = \frac{n!}{k!(n-k)!}
264K
∑_{k=1}^{n} k = n(n+1)/2
276K
∫₀^∞ e^(-r²) dr = √π / 2
\frac{12}{7} \sum_{i=1}^{n} i^{2}
257K
det| 7 4 ; 4 8 | = 40
250K
AgNO₃ + NaCl → AgCl↓ + NaNO₃
∫₀^∞ e^(-θ²) dθ = √π / 2
256K
∂y/∂r = 4y
\binom{n}{k} = \frac{n!}{k!(n-k)!}
46K
12t² + 7t + 0 = 0
12β² + 9β + 7 = 0