$x$

$k(x) = \sqrt{4^2-x^2}$

$4$

Halfpipe

Halbkreis

k(x)

f(x)

$f(x) = 4 - \sqrt{4 - x^2}$

Kontrolle

h

$h(x) = -\sqrt{4-x^2}$

h(x)

r: 4
f(x) = r - sqrt(r^(2) - x^(2))
k(x) = sqrt(r^(2) - x^(2))
s = Segment(((-r), 0), (r, 0))
X = Point(s)
dreieck, g, h, i = Polygon((0, 0), X, X + (0, k(x(X))))
a = true
b = false
c = false
d = false
sF = Segment(X, (x(X), f(x(X))))
e = false
ks(x) = (-k(x))
sH = Segment(X, (x(X), ks(x(X))))
j = false