Reaction Log /sym/649cc0
id=1 · host=co.gridbatch.net · 2026-10-18 19:39Z
∇²y = 0
∑_{k=1}^{n} k = n(n+1)/2
109K
\frac{1}{9} \sum_{i=1}^{n} i^{2}
∑_{k=1}^{n} k = n(n+1)/2
163K
CaCO₃ → CaO + CO₂
det| 9 4 ; 1 10 | = 86
261K
det| 5 7 ; 5 6 | = -5
\frac{2}{2} \sum_{i=1}^{n} i^{2}
352K
e^{i\pi} + 1 = 0
\frac{1}{7} \sum_{i=1}^{n} i^{2}
99K
\binom{n}{k} = \frac{n!}{k!(n-k)!}