Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-18 18:35Z
8t² + 6t + 5 = 0
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
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∑_{k=1}^{n} k = n(n+1)/2
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H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 7 4 ; 4 8 | = 40
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\binom{n}{k} = \frac{n!}{k!(n-k)!}
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det| 3 9 ; 6 4 | = -42
\frac{2}{2} \sum_{i=1}^{n} i^{2}
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\lim_{α\to 0} \frac{\sin α}{α} = 1
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\lim_{β\to 0} \frac{\sin β}{β} = 1
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