 \frac{ Δy }{Δx }  = 

Tangente

v = 0 (slider from 0 to 6, step 0.1)
v1: exp(-(v))
f(x) = x^(2.0)
A = Point(f)
B: (x(A) + v1, f(x(A) + v1))
C: (x(B), y(A))
a = Segment(A, C)
b = Segment(B, C)
c = Line(A, B)
d: Distance[B, C] / Distance[A, C]
text2: "" + (b / a)
e = Tangent(A, f)
g = true