I cursori a, b, c individuano la retta.

-- : funzione

-- : curva simmetrica

-- : asse di simmetria

a = 3.9 (slider from -5 to 5, step 0.1)
b = 1 (slider from -5 to 5, step 0.1)
c = -1.4 (slider from -5 to 5, step 0.1)
f(x) = sin(x)
d: a * x + b * y + c = 0.0
g = CurveCartesian((t * b^(2.0) - t * a^(2.0) - 2.0 * f(t) * a * b - 2.0 * a * c) / (a^(2.0) + b^(2.0)), (f(t) * a^(2.0) - f(t) * b^(2.0) - 2.0 * a * b * t - 2.0 * b * c) / (a^(2.0) + b^(2.0)), t, -30.0, 30.0)