Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-20 17:58Z
d/dθ [θ^5] = 5θ^4
∑_{k=1}^{n} k = n(n+1)/2
446K
\frac{2}{4} \sum_{i=1}^{n} i^{2}
d/dr [r^4] = 4r^3
\binom{n}{k} = \frac{n!}{k!(n-k)!}
259K
7α² + 1α + 1 = 0
∫₀^∞ e^(-x²) dx = √π / 2
224K
det| 7 4 ; 4 8 | = 40
234K
det| 12 3 ; 1 13 | = 153
\lim_{β\to 0} \frac{\sin β}{β} = 1
∂n/∂β = 5n
AgNO₃ + NaCl → AgCl↓ + NaNO₃
det| 5 5 ; 2 6 | = 20