ChemCalc Dump /sym/93428e
id=1 · host=br.gridbatch.net · 2026-10-18 23:40Z
d/dr [r^8] = 8r^7
∑_{k=1}^{n} k = n(n+1)/2
259K
2β² + 4β + 1 = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
159K
AgNO₃ + NaCl → AgCl↓ + NaNO₃
\binom{n}{k} = \frac{n!}{k!(n-k)!}
437K
det| 9 4 ; 1 10 | = 86
442K
det| 11 3 ; 0 12 | = 132
\binom{n}{k} = \frac{n!}{k!(n-k)!}
231K
∑_{k=1}^{n} k = n(n+1)/2
193K
AgNO₃ + NaCl → AgCl↓ + NaNO₃
205K