Haftendorn, Buch:
Kurven erkunden und verstehen
Kap 04:S. 81

Ha 2016

r = 2 (slider from -5 to 5, step 1)
fa(x) = (8 * r^(3) / (x^(2) + (4 * r^(2))))
fa'(x) = fa'(x)
fa''(x) = fa''(x)
kappa(x) = fa''(x) / (1 + fa'(x)^(2))^(3 / 2)
b: kappa(0)
c: kappa((2 * r))
d: 1 / c
f_1(x) = ?
Text1: "" + (LaTeX[fa]) + ""
e = false