$2x-\frac{1}{x}+c$

$2x^2-\frac{1}{x^2}+c$

$2x^3-\frac{1}{x^3}+c$

$2x^4-\frac{1}{x^4}+c$

$y=x^4-x^2-8$

$y=x^4-2x^2-8$

$y=x^4-3x^2-8$

$y=x^4-4x^2-8$

$y=x^3-2x^2-8$

$y=x^3-3x^2-10$

$y=x^3-4x^2-12$

$y=x^3-5x^2-14$

$\frac{1}{3}$

$1\frac{1}{3}$

$2\frac{1}{3}$

$3\frac{1}{3}$

$k=\frac{1}{4}$

$k=\frac{1}{3}$

$k=\frac{1}{2}$

$k=\frac{1}{5}$

$\frac{1}{3}$

$1\frac{1}{3}$

$2\frac{1}{3}$

$3\frac{1}{3}$

$k=1$

$k=2$

$k=3$

$k=4$

$16\pi$

$18\pi$

$20\pi$

$22\pi$

$6\frac{1}{5}\pi$

$6\frac{2}{5}\pi$

$6\frac{3}{5}\pi$

$6\frac{4}{5}\pi$