f(x) = x²
φ = (1+√5)/2 ≈ 1.618
e^(iπ) + 1 = 0
F(n) = F(n-1) + F(n-2)
xⁿ + yⁿ ≠ zⁿ (n > 2)
a² + b² = c²
e^(iθ) = cosθ + i·sinθ
1729 = 12³+1³ = 10³+9³
∫e^(-x²)dx = √π
P(A|B) = P(B|A)·P(A)/P(B)
x = (-b ± √(b²-4ac)) / 2a
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