Hans Georg Schaathun
August 2016
$$f_1(x) = x^5 + x^2 - 5x - 1$$
$${f_2(x)} = \frac{x^5 + x^2 - 5x - 1}{x^3+x+1}$$
$${f_3(x)} = \sqrt{\frac{x^5 + x^2 - 5x - 1}{x^3+x+1}}$$
$$f_4(x) = \sin x$$
$$f_5(x) = 2^x$$
