x² + y² = r² A = ½bh a² + b² = c² v = d / t E = mc² λ = h / p C = 2πr x³ + y³ KE = ½mv² P = IV F = ma ∫ f(x) dx log(ab) = log a + log b V = 4/3 πr³ y = mx + b W = Fd ΣF = 0 πr² cos θ = adjacent / hypotenuse Q = mcΔT sin²θ + cos²θ = 1 p = mv Δx / Δt s = ut + ½at² PV = nRT 1 / f = 1 / u + 1 / v √144 = 12 2πr ΔG = ΔH - TΔS n! / r!(n-r)! f′(x) R = ρL / A lim x→0 sin(x)/x = 1 x = (-b ± √(b²-4ac)) / 2a

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