E_1 = (2, 4)
E_2 = (6, 0)
hx: x(E_1)
hy: y(E_1)
tx: x(E_2)
ty: y(E_2)
nn: -tx^(3.0) + 3.0 * hx * tx^(2.0) - 3.0 * hx^(2.0) * tx + hx^(3.0)
a: -(2.0 * hy - 2.0 * ty) / nn
b: (-3.0 * tx * ty - 3.0 * hx * ty + hy * (3.0 * tx + 3.0 * hx)) / nn
c: -(6.0 * hx * hy * tx - 6.0 * hx * tx * ty) / nn
d: (-3.0 * hx^(2.0) * tx * ty + hx^(3.0) * ty + hy * (3.0 * hx * tx^(2.0) - tx^(3.0))) / nn
f(x) = a * x^(3.0) + b * x^(2.0) + c * x + d
e = OrthogonalLine(E_1, yAxis)
g = OrthogonalLine(E_2, yAxis)
Text1: "f(x) = " + a + "x³ + " + b + "x² + " + c + "x + " + d
f'(x) = f'(x)
f''(x) = f''(x)