P(a|f(a))

Tangente

Dreieck

Achsenschnittpunkte

k = 1 (slider from 0.1 to 5, step 0.1)
f(x) = k / x
P = Point(f)
a: x(P)
t(x) = (f'(a) * (x - a)) + f(a)
c: t(0)
d: a - f(a) / f'(a)
A: (c * d)
b = false
Y: (0, c)
X: (d, 0)
Dreieck = Polygon({(0, 0), Y, X})
e = false
g = false
Text1: "f(x) = \frac{" + (LaTeX[k]) + "}{x}"