A = (x_0, f(x_0))

B = (x_0 + h, f(x_0 + h))

x_0

x_0 + h

f(x_0 + h)

f (x_0)

h = 4 (slider from 0 to 4, step 0.2)
f(x) = ((1 / 3 * (x + 3.157556275251357)) - 3)^(2) + x + 0.607556275251357 - 0.09 + 1.87 - 0.37 - 1 - 3.154476860919737
A: (3, f(3))
B: (3 + h, f(3 + h))
a_1 = Line(A, B)
c = Tangent(A, f)
b = OrthogonalLine(A, xAxis)
d = OrthogonalLine(B, xAxis)
C = Intersect(b, xAxis)
D = Intersect(d, xAxis)
e = Segment(A, C)
g = Segment(B, D)
h_1 = OrthogonalLine(B, yAxis)
i = OrthogonalLine(A, yAxis)
E = Intersect(h_1, yAxis)
F = Intersect(yAxis, i)
j = Segment(E, B)
k = Segment(F, A)