Spectra Ledger /sym/2e6562
id=1 · host=commstar.world · 2026-10-20 05:15Z
∂r/∂ψ = 3r
det| 12 9 ; 5 13 | = 111
193K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
det| 7 4 ; 4 8 | = 40
322K
∑_{k=1}^{n} k = n(n+1)/2
235K
∂ψ/∂φ = 4ψ
\binom{n}{k} = \frac{n!}{k!(n-k)!}
362K
det| 10 3 ; 5 11 | = 95
\binom{n}{k} = \frac{n!}{k!(n-k)!}
179K
\frac{1}{8} \sum_{i=1}^{n} i^{2}
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
42K
∑_{k=1}^{n} k = n(n+1)/2
41K