Reaction Log /sym/649cc0
id=1 · host=co.gridbatch.net · 2026-10-17 23:15Z
∑_{k=1}^{n} k = n(n+1)/2
\frac{6}{7} \sum_{i=1}^{n} i^{2}
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
230K
∑_{k=1}^{n} k = n(n+1)/2
\binom{n}{k} = \frac{n!}{k!(n-k)!}
119K
det| 7 4 ; 4 8 | = 40
152K
11θ² + 3θ + 2 = 0
det| 9 1 ; 7 10 | = 83
255K
∑_{k=1}^{n} k = n(n+1)/2
173K
det| 7 7 ; 6 8 | = 14
\binom{n}{k} = \frac{n!}{k!(n-k)!}